"As January 1, 2012 approaches, a date from which the EU intends to bring airlines into the CO2 emissions trading markets, the quarrel between Europe and the United States is “degenerating,” reports the Financial Times Deutschland. According to the German economic daily, U.S. Secretary of State Hillary Clinton and U.S. Secretary of Transportation Raymond LaHood “sent a joint letter to senior leaders of the European Commission last week in which they decisively reject the EU’s plans” and threaten the EU with retaliation “if it does not reconsider those plans.”" (Quoted from article)