Washington Post: Moved by escalating violence in Syria, European leaders warned Tuesday that they will impose new sanctions on Damascus unless President Bashar al-Assad halts his bloody crackdown on anti-government protesters. The warnings reflected a growing sense of outrage in European capitals since Assad sent tanks and armored personnel carriers into the rebellious southern city of Daraa on Monday, firing at youths in the street and inflicting a death toll estimated by human rights activists at two dozen.