The United States has not made it clear. They've said 2005.
On October 29th, 2009. See this statement in context.
On October 29th, 2009. See this statement in context.
October 29th, 2009 / 12:35 p.m.
Director, Climate Change and Energy, International Institute for Sustainable Development
The United States has not made it clear. They've said 2005.
See context to find out what was said next.