Syrian rights groups say the death toll in a two-day government crackdown on protesters in the northwest has risen to 35 as exiled opposition figures called for the isolation of authoritarian President Bashar al-Assad. The violent clashes began on Saturday and continued into Sunday, after thousands of residents turned out for the funerals of other anti-government protesters killed in the crackdown. The updated casualty count includes six members of the Syrian security forces killed during operations in the towns of Jisr al-Shughour and nearby Khan Sheikhoun. The United States and the European Union have already imposed sanctions on Mr. Assad and his inner circle. Syrian activists have been protesting almost daily since March for democratic reforms and an end to President Assad's 11-year rule.