Taking his case to the Senate floor, Sen. John McCain has pushed for the U.S. to lead an international military intervention in Syria. “It would be a strategic and moral defeat for the United States” if Syria’s President Assad remained in power, McCain said, calling for airstrikes against the regime’s military. “Time is running out. Assad’s forces are on the march,” he continued. “Proving military assistance … alone will not be sufficient to stop the slaughter.” McCain also reminded his colleagues that Syria is a close ally of Iran.