奥巴马,普京未能解决在叙利亚问题上的分歧

U.S. President Barack Obama and Russian President Vladimir Putin are still at odds over a potential strike on Syria, after discussing the issue on the sidelines of the G20 ((Group of 20)) economic summit in Russia.

In a Friday news conference, Mr. Obama said his conversation with Mr. Putin was "candid" and "constructive." But he added that he did not believe the talk would change Russia's opposition to any foreign military intervention in Syria.

Mr. Obama is trying to win international support for military action to punish Syria's government for an alleged chemical attack that killed more than 1,400 people in August. The U.S. president said he would address the American people about the issue Tuesday night and continue to work with Congress on a resolution authorizing military action.

The president said most world leaders attending a G20 dinner, and discussions that continued into the early morning hours Friday, were "comfortable" with the U.S. conclusion that the Syrian government was responsible for the attack. He said the leaders were "unanimous"  in believing that international norms against the use of chemical weapons had to be maintained.

However, he said world powers were divided on launching military action without going through the United Nations Security Council.

Mr. Putin said any foreign strike on Syria would be "illegal."  He said the chemical attack was a "provocation" by opposition fighters in Syria who are receiving foreign support.

Mr. Putin said leaders from India, Indonesia, South Africa and India were among those who spoke against any military intervention at Thursday's G20 dinner.