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As they resume their investigation into allegations about the use of chemical weapons in Syria, U.N. experts are looking into at least three incidents for which President Bashar Assad's aides have said the rebels were responsible. The inspectors are not expected to assign blame.

Nations will disagree about when and how to stop tyrants from committing mass murder, the president told the U.N. General Assembly. But he made the case that the international community must do more to prevent atrocities. Obama also used his address to say the U.S. is encouraged by signs of moderation from Iran.

In an interview with Fox °µºÚ±¬ÁÏ, President Bashar Assad said it was "self-evident" that what happened in Syria is a war crime, but that it wasn't his regime that used the chemical weapons.

Syria's rebels are criticizing a plan to destroy the country's chemical weapons, saying it doesn't punish President Bashar Assad. The Syrian regime's first public reaction to the U.S.-Russia deal came Sunday, when a minister called it a "victory."

The U.S. secretary of state will be in Geneva on Thursday to meet with his Russian counterpart. Russia's proposal that the Assad regime hand over its chemical weapons may provide a diplomatic way of resolving the crisis. But the U.S. has said Assad can't use it as a delaying tactic.

The President addressed the nation Tuesday laying out his case on Syria and acknowledging the changing diplomatic situation in regard to Russia and Syria.…

Russia's foreign minister says he has told his Syrian counterpart that one way to head off a U.S. strike could be to hand over control of those weapons to international watchdogs. The Assad regime has reportedly welcomed the suggestion. The White House says any turnover has to be verifiable.

Syria's President Bashar al-Assad has talked about the looming threat of a U.S. military strike in an interview with CBS °µºÚ±¬ÁÏ' Charlie Rose. Officials in the U.S. and its allies are debating how to respond to the conflict in Syria.

Former Nuremberg war crimes prosecutor Benjamin Ferencz about a letter he wrote to the New York Times on Syria arguing that believes the International Criminal Court, not the U.S. government, should decide how to deal with Syrian President Bashar Assad. Ferencz explains with Weekend Edition Sunday host Rachel Martin.

The Syrian president insists that the U.S. and others have not been able to back their claims that Syrian government forces used chemical weapons in an Aug. 21 attack.