Disparate American and European positions on global warming "may undermine or weaken the agreement which is destined to replace the Kyoto Protocol on the reduction of greenhouse gases," reports La Vanguardia. According to the Barcelona daily, Barack Obama's election to the White House revived hopes that the United States would adhere to a compromise accord on the continuation of Kyoto at the Copenhagen Conference (COP15) in December, which would unite the international community. However, this is by no means a foregone conclusion. "A huge gap separates the United States from the EU," notes the daily, because the Union would like to achieve a 30% cut in greenhouse gas emissions by 2020 (30% less than the 1990 level), while the United States wants to introduce self-designed emissions reduction, and delay the implementation of protocol measures which will be decided for the 2020-2050 period. It is this proposal that "has hampered efforts to establish a global programme," concludes La Vanguardia.