Competition authorities across the globe have recently been paying close attention to the activity of large firms in high-tech markets, in particular Google, Amazon, Facebook and Apple. One estimate suggests that 30 cases have been opened by the authorities since 2010, and a third of these were launched in 2020.
One of the most prominent recent cases in the US courts concerns a complaint made by Epic Games, producer of the popular Fortnite game, against Apple. The background to the case is Apple’s standard practice on its App Store of taking a 30% cut of all paid app and in-app purchases. Therefore, a Fortnite player purchasing $10 worth of in-game currency would result in $7 for Epic and $3 for Apple.
However, in August 2020 Epic decided, contrary to Apple’s terms and conditions, to offer players an alternative way to purchase in-game currency. Gamers would see a choice screen giving them the option to buy currency through the Apple App Store or to buy it directly from Epic. Crucially, purchasing directly from Epic would be cheaper. For example, the same $10 worth of in-game currency on the App Store would cost only $8 if purchased directly from Epic.
It is clear to see why Epic was in favour of direct payments – it earns revenue of $8 instead of $7. However, note that the benefits for gamers are even larger – they save $2 by buying directly. In other words, Epic is passing on 2/3 of the cost saving to consumers.
Apple very quickly responded to Epic’s introduction of the direct purchase alternative by removing Fortnite from the App Store. Epic then filed a complaint with the US District Court.
The Epic v Apple court case
The case concerned Apple restricting game developers’ ability to promote purchasing mechanisms outside the App Store. However, more broadly, it also examined Apple’s complete control of the iOS app market since all apps must be distributed through the Apple App Store. Epic had previously disrupted PC games distribution by launching its own platform with lower fees. The setup of iOS and Apple’s actions against Epic make this an impossible way to reach users.
The Court’s analysis of the Epic v Apple case depended upon several key factors. First, the market definition. To be found to have breached competition law Apple must have a significant share of the market. If the market is defined as that for iOS apps, this is clearly the case. However, if, as Apple argues, it is broader, encompassing the options to play Epic games through web browsers, gaming consoles and PCs, then this is not the case.
Second, even if the market is narrowly defined, Apple argues that its control of the app distribution market is essential to provide user friendly and secure provision of apps. Furthermore, revenue extracted from app producers can enable more investment in the iOS. Without Apple controlling the market, app producers would be able to free-ride on the visibility the App Store provides for their apps.
The US Court announced its ruling on 10 September 2021. The judge decided that the market was broader than just iOS and thus Apple is not considered to be a monopolist. This has been touted as a major success for Apple, as it will allow the company to maintain its control of the app distribution market. However, the Court also ruled that Apple must allow game developers to link and direct users to alternative purchasing methods outside the App Store.
The Court’s decision in the Epic v Apple case closely follows concessions recently made by Apple for so called ‘reader apps’ such as Spotify and Netflix. Following an investigation by the Japanese authorities, these concessions allowed such apps to promote and receive purchases directly from consumers as long as they were made outside the app. These apps could be treated differently, as digital goods are consumed on multiple devices. However, the decision in the Epic case now extends such concessions to gaming apps.
It is unclear whether Apple will appeal the decision in the case Epic brought. If not, Apple stands to lose considerable revenue from its 30% share of in-app purchases. It will be very interesting to see how this ruling affects how Apple runs the App Store. Epic, on the other hand, has already made clear it will appeal the decision, aiming to prevent Apple gaining a share of any payment users make outside the app.
Matt Olczak and Jon Guest
- Why might a firm involved in a competition case, such as Apple, try to convince the authorities to define the relevant market as broadly as possible?
- Using the example of the Epic v Apple case, explain how Apple’s actions could be seen as both exclusionary and exploitative abuses of a dominant position.
Boeing and Airbus have called a truce in their 17-year battle over subsidies. During this period, both have accused each other of unfair government subsidies to their respective plane makers.
The long-running trade dispute
In October 2004, the USA requested the establishment of a WTO panel to consider whether Airbus was providing unfair subsidies to develop its new super-jumbo – the A380. This provoked a counter-request by Airbus, claiming unfair subsidies of $27.3 billion for Boeing by the US government since 1992. In July 2005, two panels were set up to deal with the two sets of allegations.
In June 2010, the WTO panel circulated its findings on Boeing’s case against Airbus. It found Airbus guilty of using some illegal subsidies to win contracts through predatory pricing, but dismissed several of Boeing’s claims because many of the subsidies were reimbursable at commercial rates of interest. However, some of the ‘launch aid’ for research and development was given at below market rates and so violated WTO rules. The report evoked appeal and counter-appeal from both sides, but the WTO’s Appellate Body reported in May 2011 upholding the case that ‘certain subsidies’ provided by the EU and member states were incompatible with WTO rules. In June 2011, the EU accepted the findings.
In March 2011, the WTO panel circulated its findings on Airbus’s case against Boeing. The EU claimed that ten specific measures amounted to subsidies to Boeing, which were inconsistent with the WTO’s rules on subsidies (the SCM agreement). It upheld three of ten alleged breaches, including subsidies between 1989 and 2006 of at least $5.3 billion. These subsidies were adjudged to have resulted in adverse effects to the EU’s interests, specifically in lost sales, especially to third-country markets, and in significantly suppressing the price at which Airbus was able to sell its aircraft.
But these rulings were not the end of the matter. Various appeals and counter-appeals were lodged by both sides with varying degrees of success. Also the disputes extended to other wide-bodied jets and to narrow-bodied ones too with claims by both sides of unfair subsidies and tax breaks.
On 9 June 2017 the WTO’s compliance panel rejected several EU claims that the USA had failed to withdraw all illegal subsidies to Boeing. However, it also found that the USA had not complied with an earlier ruling to abolish illegal tax breaks. Both sides claimed victory. Airbus claimed that the ruling had seen the WTO condemn non-compliance and new subsidies. In particular, it focused on the WTO ruling that Washington State subsidies had resulted in a significant loss of sales for Airbus. On the other hand, a Boeing press release spoke of a US win in a major WTO compliance ruling. Boeing claimed that that ruling meant that the United States had complied with ‘virtually all’ of the WTO’s decisions in the counter-case that the EU had filed against the USA in 2006.
On 27 June 2017, as expected, the EU challenged the WTO decision. This meant that the EU’s case would go back to the WTO’s appellate body, which was still considering a separate US case over state aid to Airbus.
On 15 May 2018, the WTO ruled that Airbus did not use unfair subsidies for narrow-bodied jets, such as the A320, which competes with the 737, but did for wide-bodied jets. The EU said that it would comply with the WTO ruling over the support for wide-bodied jets.
In 2019, the WTO ruled that the EU had illegally provided support to Airbus. The USA responded with tariffs of up to $7.5bn on a range of goods imported from the EU. In a parallel case, the WTO ruled that the US benefits to Boeing also violated trade rules, authorising the EU to impose tariffs on US imports worth roughly $4bn. Then in March 2020, the USA imposed a 15% tariff on Airbus aircraft.
Agreement was reached on 15 June 2021 in trade talks between the USA and the EU in Brussels. Both sides recognised that the dispute had been a negative-sum game, with both sides losing. It was thus agreed to suspend for five years all tariffs on aircraft and on a range of other goods, such as EU cheese and wine and US tobacco and spirits. The agreement did not include ending EU tariffs on US steel, however.
It was also agreed to work on an overarching agreement on subsidies, which would allow fair support by governments on both sides, and to co-operate in finding ways to counter unfair state investment in aircraft by China. US Trade Representative Katherine Tai said that the agreement ‘includes a commitment for concrete joint collaboration to confront the threat from China’s ambitions to build an aircraft sector on non-market practices’. China’s state-sponsored aerospace manufacturer, the Commercial Aircraft Corporation of China, or Comac, sees its C919, now in late stages of development, as a direct rival to the Airbus A320neo and the Boeing 737 Max.
To work out the details of US-EU collaboration, a working group will be set up. It will consider ways of ensuring that finance is provided on market terms, that R&D funding is transparent and that support given to aircraft manufactures will be equivalent by each side and will avoid harming the other side. It will consider just how the two sides can co-operate to address unfair competition from elsewhere.
Two days later, an almost identically worded deal was reached between the USA and the UK to end tariffs on a range of goods and join the EU-USA co-operation on aircraft manufacture.
- US and Europe end Airbus-Boeing dispute as they eye threat from China
CNN, Charles Riley and Kevin Liptak (15/6/21)
- After 17 years, truce nears in U.S.-Europe jet subsidy war
Reuters, Tim Hepher, Andrea Shalal, David Shepardson and Philip Blenkinsop (15/6/21)
- U.S, EU agree truce in 17-year Airbus-Boeing conflict
Reuters, Philip Blenkinsop (16/6/21)
- After EU, Britain and U.S. reach truce in aircraft trade dispute
Reuters, Tim Hepher and Alistair Smout (17/6/21)
- EU and US end Airbus-Boeing trade dispute after 17 years
Financial Times, Jim Brunsden, Sam Fleming, Aime Williams and James Politi (15/6/21)
- Boeing-Airbus trade row set to end after 17 years
BBC News (16/6/21)
- Biden, E.U. end 17-year Airbus-Boeing trade dispute, seek to calm relations after Trump
The Washington Post, Michael Birnbaum, Anne Gearan and David J. Lynch
- EU, U.S. Agree to Five-Year Truce in Boeing-Airbus Trade Dispute
Bloomberg, Alberto Nardelli, Nikos Chrysoloras and Jennifer Jacobs (15/6/21)
- Choose any one particular complaint to the WTO by either Boeing or Airbus and assess the arguments used by the WTO in its ruling.
- Are subsidies by aircraft manufacturers in the interests of (a) passengers; (b) society in general?
- Is collaboration between Boeing and Airbus in the interests of (a) passengers; (b) society in general?
- How is game theory relevant to the long-running disputes between Boeing and Airbus and to their relationships in the coming years?
- Would cheaper aircraft from China be in the interests of (a) passengers; (b) society in general?
- Explain what is meant by ‘strategic trade theory’. How is it relevant to aircraft manufacture?
With the coronavirus pandemic having reached almost every country in the world, the impact on the global economy has been catastrophic. Governments have struggled balancing the spread of the virus and keeping the economy afloat. This has left businesses counting the costs of various control measures and numerous lockdowns. The crisis has particularly affected small and medium-sized enterprises (SMEs), causing massive job losses and longer-term economic scars. Among these is an increase in the market power held by dominant firms as they emerge even stronger while smaller rivals fall away.
It is feared that with the full effects of the pandemic not yet realised, there may well be a wave of bankruptcies that will hit SMEs harder than larger firms, particularly in the most affected industries. Larger firms are most likely to be more profitable in general and more likely to have access to finance. Firm-level analysis using Orbis data, which includes listed and private firms, suggests that the pandemic-driven wave of bankruptcies will lead to increases in industry concentration and market power.
What is market power?
A firm holds a dominant position if its power enables it to operate within the market without taking account of the reaction of its competitors or of intermediate or final consumers. The key role of competition authorities around the world is to protect the public interest, particularly against firms abusing their dominant positions.
The UK’s competition authority, the Competition and Markets Authority (CMA) states:
Market power arises where an undertaking does not face effective competitive pressure. …Market power is not absolute but is a matter of degree; the degree of power will depend on the circumstances of each case. Market power can be thought of as the ability profitably to sustain prices above competitive levels or restrict output or quality below competitive levels. An undertaking with market power might also have the ability and incentive to harm the process of competition in other ways; for example, by weakening existing competition, raising entry barriers, or slowing innovation.
It can be hard to distinguish between a rapidly growing business and growing concentration of market power. In a pandemic, these distinctions can become even more difficult to discern, since there really is a deep need for a rapid deployment of capital, often in distressed situations. It is also not always evident whether the attempt to grow is driven by the need for more productive capacity, or by the desire to engage in financial engineering or to acquire market power.
It may be the case that, as consumers, we simply have no choice but to depend on various monopolies in a crisis, hoping that they operate in the public interest or that the competition authorities will ensure that they do so. With Covid-19 for example, economies will have entered the pandemic with their existing institutions, and therefore the only way to operate may be through channels controlled by concentrated power. Market dominance can occur for what seem to be good, or least necessary, reasons.
Why is market power a problem?
Why is it necessarily a problem if a successful company grows bigger than its competitors through hard work, smart strategies, and better technology adoption? It is important to recognise that increases in market power do not always mean an abuse of that market power. Just because a company may dominate the market, it does not mean there is a guaranteed negative impact on the consumer or industry. There are many advantages to a monopoly firm and, therefore, it can be argued that the existence of a market monopoly in itself should not be a cause of concern for the regulator. Unless there is evidence of past misconduct of dominance, which is abusive for the market and its stakeholders, some would argue that there is no justification for any involvement by regulators at all.
However, research by the International Monetary Fund concluded that excessive market power in the hands of a few firms can be a drag on medium-term growth, stifling innovation and holding back investment. Given the severity of the economic impact of the pandemic, such an outcome could undermine the recovery efforts by governments. It could also prevent new and emerging firms entering the market at a time when dynamism is desperately needed.
The ONS defines business dynamism as follows:
Business dynamism relates to measures of birth, growth and decline of businesses and its impact on employment. A steady rate of business creation and closure is necessary for an economy to grow in the long-run because it allows new ideas to flourish.
A lack of business dynamism could lead to a stagnation in productivity and wage growth. It also affects employment through changes in job creation and destruction. In this context, the UK’s most recent unemployment rate was 5%. This is the highest figure for five years and is predicted to rise to 6.5% by the end of 2021. Across multiple industries, there is now a trend of falling business dynamism with small businesses failing to break out of their local markets and start-up companies whose prices are undercut by a big rival. This creates missed opportunities in terms of growth, job creation, and rising incomes.
There has been a rise in mergers and acquisitions, especially amongst dominant firms, which is contributing to these trends. Again, it is important to recognise that mergers and acquisitions are not in themselves a problem; they can yield cost savings and produce better products. However, they can also weaken incentives for innovation and strengthen a firm’s ability to charge higher prices. Analysis shows that mergers and acquisitions by dominant firms contribute to an industry-wide decline in business dynamism.
Changes in market power due to the pandemic
The IMF identifies key indicators for market power, such as the percentage mark-up of prices over marginal cost, and the concentration of revenues among the four biggest players in a sector. New research shows that these key indicators of market power are on the rise. It is estimated that due to the pandemic, this increase in market dominance could now increase in advanced economies by at least as much as it did in the fifteen years to the end of 2015.
Global price mark-ups have risen by more than 30%, on average, across listed firms in advanced economies since 1980. And in the past 20 years, mark-up increases in the digital sector have been twice as steep as economy-wide increases. Increases in market power across multiple industries caused by the pandemic would exacerbate a trend that goes back over four decades.
It could be argued that firms enjoying this increase in market share and strong profits is just the reward for their growth. Such success if often a result of innovation, efficiency, and improved services. However, there are growing signs in many industries that market power is becoming entrenched amid an absence of strong competitors for dominant firms. It is estimated that companies with the highest mark-ups in a given year, have an almost 85 percent chance of remaining a high mark-up firm the following year. According to experts, some of these businesses have created entry barriers – regulatory or technology driven – which are incredibly high.
Professor Jayant R. Varma, a member of the MPC of the Reserve Bank of India (RBI), observed that in several sectors characterised by an oligopolistic core and a competitive periphery, the oligopolistic core has weathered the pandemic and it is the competitive periphery that has been debilitated. Rising profits and profit margins, improving capacity utilisation and lack of new capacity additions create ripe conditions for the oligopolistic core to start exercising pricing power.
The drivers and macroeconomic implications of such rises in market power are likely to differ across economies and individual industries. Even in those industries that benefited from the crisis, such as the digital sector, dominant players are among the biggest winners. The technology industry has been under the microscope in recent years, and increasingly the big tech firms are under scrutiny from regulators around the world. The market disruptors that displaced incumbents two decades ago have become increasingly dominant players that do not face the same competitive pressures from today’s would-be disruptors. The pandemic is adding to powerful underlying forces such as network effects and economies of scale and scope.
A new regulator that aims to curb this increasing dominance of the tech giants has been established in the UK. The Digital Markets Unit (DMU) will be based inside the Competition and Markets Authority. The DMU will first look to create new codes of conduct for companies such as Facebook and Google and their relationship with content providers and advertisers. Business Secretary Kwasi Kwarteng said the regime will be ‘unashamedly pro-competition’.
The additions in regulation in the UK fall in line with the guidance from the IMF. It recommends that adjustments to competition-policy frameworks need to be made in order to minimise the adverse effects of market dominance. Such adjustments must, however, be tailored to national circumstances, both in general and to address the specific challenges raised by the surge of the digital economy.
It recommends the following five actions:
- Competition authorities should be increasingly vigilant when enforcing merger control. The criteria for competition authorities to review a deal should cover all relevant cases – including acquisitions of small players that may grow to compete with dominant firms.
- Second, competition authorities should more actively enforce prohibitions on the abuse of dominant positions and make greater use of market investigations to uncover harmful behaviour without any reported breach of the law.
- Greater efforts are needed to ensure competition in input markets, including labour markets.
- Competition authorities should be empowered to keep pace with the digital economy, where the rise of big data and artificial intelligence is multiplying incumbent firms’ advantage. Facilitating data portability and interoperability of systems can make it easier for new firms to compete with established players.
- Investments may be needed to further boost sector-specific expertise amid rapid technological change.
The crisis has had a significant impact on all businesses, with many shutting their doors for good. However, there has been a greater negative impact on SMEs. Even in industries that have flourished from the pandemic, it is the dominant firms that have emerged the biggest winners. There is concern that the increasing market power will remain embedded in many economies, stifling future competition and economic growth. While the negative effects of increased market power have been moderate so far, the findings suggest that competition authorities should be increasingly vigilant to ensure that these effects do not become more harmful in the future.
Reviews of competition policy frameworks have already begun in some major economies. Young, high-growth firms that innovate and create high-quality jobs deserve a level playing field and a fair chance to succeed. Support directed to SMEs is important, as many small firms have been unable to benefit from government programmes designed to help firms access financing during the pandemic. Policymakers should act now to prevent a further, sharp rise in market power that could hold back the post-pandemic recovery.
- What are the arguments for and against the assistance of a monopoly?
- What barriers to entry may exist that prevent small firms from entering an industry?
- What policies can be implemented to limit market power?
- Define and explain market dynamism.
Each week, BBC Radio 4 broadcasts readings from a book serialised in five 15-minute episodes. In the week beginning 18 January 2021, the readings were from English Pastoral: An Inheritance by James Rebanks, a farmer from the Cumbrian fells. His farm is relatively small, covering 185 acres.
He has attempted to make it much more sustainable and less intensive, reintroducing traditional Herdwick sheep, having a mixture of cows and sheep rather than just sheep, a greater sub-division of fields, and more natural scrubland, peatbogs and trees. As a result, soil quality has improved and there has been an explosion of biodiversity, with an abundance of wild flowers and insects.
Apart from being an autobiography of his time as a farmer and his attempt to move towards more traditional methods, the book examines broader issues of agricultural sustainability. It looks at the pressures of consumers wanting cheap food, the market power of supermarkets and wholesalers, the cost pressures on farmers pushing them towards monoculture to achieve economies of scale, and the role of the agrichemicals industry promoting fertilisers, feeds and pesticides which bring short-term financial gains to farmers, but which cause longer-term damage to the land and to biodiversity.
Rebanks has gained quite a lot of media attention after the publication of his first book, The Shepherd’s Life, including being one of the guests on Desert Island Discs and the subject of an episode of The Food Programme.
Listen to the Food Programme podcast and try answering the questions, which are all based on the podcast in the order of the points made in the interview.
- What are the incentives of an unregulated market for food that result in monoculture and a loss of biodiversity?
- To what extent are consumers responsible for changes in farming methods?
- Have the changes helped the urban poor?
- How is the monopsony power of supermarkets and food wholesalers impacting on food production and the pattern of agriculture?
- There are various (private) economies of scale in food production, but these often involve substantial external costs and long-term private costs too. How does this impact on land use?
- What are some of the limits of technology in increasing crop, meat and dairy yields?
- Will more recent changes in the pattern of food consumption help to increase mixed farming and biodiversity?
- Is it ‘rational’ for many farmers to continue with intensive farming with high levels of artificial fertilisers and pesticides?
- Is diversity in farming across farms within a local area a public good? If so, how could such diversity be achieved?
- How can farmers be encouraged to think and act holistically?
- Is there a trade-off between food output and biodiversity?
- What are the dangers in the UK reaching an agricultural trade deal with the USA?
- What are the benefits and costs of encouraging local food markets?
Back in November, when Joe Biden had just been elected, we considered some of his proposed policies to tackle climate change (see A new era for climate change policy?). On 20th January, the day of his inauguration, he signed 17 executive orders overturning a range of policies of the Trump presidency. Further executive orders followed. Some of these related directly to climate change.
The first was to cancel the Keystone XL oil pipeline project. If it had gone ahead, it would have transported 830 000 barrels of oil per day from the Alberta tar sands in Canada to refineries on the Gulf Coast of Texas. It would have involved building a new pipeline from Alberta to Nebraska, where it would have linked to an existing pipeline to Texas. Extracting oil from tar sands is a particularly dirty process, involves cutting down large areas of forest (a carbon sink) and total emissions are around 20% greater per barrel than from conventional crude.
The pipeline would have cut across First Nations land and any spills would have been highly toxic to the local environment. In terms of profitability, returns on tar sands oil extraction and transportation are very low. This is likely to remain the case as oil prices are likely to remain low, with greater global energy efficiency and the switch to renewables.
Critics of Biden’s decision argue that the pipeline project would have created some 5000 to 6000 temporary jobs in the USA during the two-year construction phase. Also they claim that it would have contributed to greater energy security for the USA.
The second executive order was to rejoin the Paris Climate Agreement, a process that will take 30 days. Rejoining will involve commitments to cut greenhouse gas emissions and the adoption of various measures to bring this about. During the election campaign, Biden pledged to achieve economy-wide net-zero emissions no later than 2050. As we saw in the previous blog, under Biden the USA will play a leading role in the November 2021 UN COP26 climate change conference in Glasgow.
At present, the Paris agreement is for countries to aim to reach a peak of greenhouse gas emissions as soon as possible to achieve a climate neutral world by mid-century. Many countries have have made commitments about when they aim to achieve carbon neutrality, although concrete action is much more limited. It is hoped that the COP26 conference will lead to stronger commitments and actions and that the USA under Biden will play a leading part in driving this forward.
In addition, to cancelling the Keystone XL pipeline and rejoining the Paris Agreement, the executive orders reversed more than 100 other decisions with negative environmental effects taken by the Trump administration – many overturning environmental measures introduced by previous administrations, especially the Obama administration.
These orders included reversing the easing of vehicle emissions standards; stopping reductions in the area of two major national monuments (parks) in Utah; enforcing a temporary moratorium on oil and natural gas leases in Alaska’s Arctic National Wildlife Refuge; and re-establishing a working group on the social costs of greenhouse gasses.
Then there will be new measures, such as adopting strict fuel economy standards and investment in clean public transport. But it remains to be seen how far and fast the Biden administration can move to green the US economy. With the desire for bipartisanship and seeking an end to the divisive policies of Trump, there may be limits to what the new President can achieve in terms of new legislation, especially with a Senate divided 50:50 and only the casting vote of the chair (Kamala Harris as Vice-President) being in Democrat hands.
The articles below consider the various green policies and how likely they are to succeed in their objectives.
- Climate change: Biden’s first act sets tone for ambitious approach
BBC News, Matt McGrath (20/1/21)
- Biden nixes Keystone XL permit, halts Arctic refuge leasing
The Hill, Rachel Frazin (20/1/21)
- Biden’s return to Paris pact just a first step for U.S. climate action
Reuters, Megan Rowling (20/1/21)
- Court Decision Lets Biden Set New Emissions Rules To Meet Paris Agreement Climate Goals
Forbes, Allan Marks (20/1/21)
- Biden to ‘hit ground running’ as he rejoins Paris climate accords
The Guardian, Oliver Milman (19/1/21)
- What could a Biden-Harris administration mean for the planet?
Euronews, Marthe de Ferrer (20/1/21)
- Ask a Scientist: What Should the Biden Administration and Congress Do to Address the Climate Crisis?
ecoWatch, Elliott Negin (18/1/21)
- Biden marks Day One with burst of orders reversing Trump policies on climate and health
Science Business, Éanna Kelly (21/1/21)
- What Is the Paris Climate Agreement That Joe Biden Will Rejoin, Why Did Donald Trump Leave?
Newsweek, Kashmira Gander (18/1/21)
- Find out what other environmental policies are being pursued by President Biden and assess their likely effectiveness in achieving their environmental objectives.
- Would policies to reduce carbon emissions necessarily be desirable? How would you assess their desirability?
- When is it best to use the ‘precautionary principle’ when devising environmental policies?
- To what extent is game theory relevant in understanding the difficulties and opportunities of developing internationally agreed policies on carbon reduction?
- If the objective is to tackle global warming, is it better to seek international agreement on limiting the extent of global warming or international agreement on carbon reduction? Explain.