Nations are preparing to meet in Denmark to hammer out a new international treaty to slow climate change, but the talks have been hampered by disputes between rich countries and developing ones.

"If I am confident that all of the countries involved are bargaining in good faith and we are on the brink of a meaningful agreement and my presence in Copenhagen will make a difference in tipping us over the edge, then certainly that’s something that I will do," Obama said in an interview with Reuters.

It was Obama’s strongest statement to date that he may attend the Dec. 7th-18th UN conference. White House officials previously