U.S. Secretary of State Hillary Rodham Clinton expressed doubt Sunday about whether President Bashar Assad would ever adhere to a U.N.-sponsored peace plan to end Syria's year of bloodshed, and urged world solidarity against a regime that she said was waging war on its own people. Hillary Clinton told the 60 nations attending the "Friends of the Syrian People" conference in Turkey that no one could "sit back and wait any longer," according to a report of the Associated Press. She urged unity behind a plan that includes more sanctions, humanitarian aid, support for the opposition and the promise of justice one day for the Assad regime's willing accomplices in human rights atrocities. "We meet at an urgent moment for Syria and the region," Hillary Clinton said.