This implies that before 2050 global emissions of CO2 must be reduced to below 50% of the 1990 level (they are currently 15% above that level), and that average emissions in developed countries must be reduced by at least 80% of the 1990 level. The United Kingdom has already committed itself to a binding target to reduce emissions by that amount, and President Barack Obama has expressed intention that the United States should also set that target.