Canada has become the first nation to formally pull out of the Kyoto protocol.
The announcement was made by Environment Minister Peter Kent on Monday. He gave no details on when exactly Ottawa would pull out, but said Canada would be subject to enormous financial penalties under the terms of the treaty unless it withdrew.
The country signed-on to the climate change agreement in 1997 under a Liberal government.
Ottawa says it backs a new global deal to cut emissions of greenhouse gases, but insists it has to cover all nations, including the United States, China and India, which are not bound by Kyoto's current targets.
The Conservatives are aiming for a 17 per cent reduction of 2005 greenhouse gas emission levels by 2020.