The U.N. Security Council has voted unanimously to condemn the Syrian government after a massacre in Houla left an estimated 108 dead, 32 of which were children. It's Russia's strongest stance on the violence that's rocked the nation for 15 months. Secretary of State Hillary Clinton said Sunday that “those who perpetrated this atrocity must be identified and held to account.” British Foreign Secretary William Hague also said he wanted to see a “strong response” to the brutal attack. As thousands marched in Syria on Sunday to protest the attacks, two more men were shot dead by Syrian security forces in Damascus neighborhoods. Also on Sunday, Syrian officials accused the rebels of carrying out the massacre themselves.