NEW : An opposition group reports at least 128 people were killed Thursday . A ship carrying repaired military helicopters for Syria is returning to Russia . The U.S. Ambassador to Syria threatens international prosecution of military personnel . Most in neighboring Syria believe al - Assad dead , BBC Research finds .
NEW : An opposition group reports at least 128 people were killed Thursday . A ship carrying repaired attack helicopters for Syria is returning to Russia . The U.S. ambassador to Syria threatens international prosecution of military members . Most in neighboring countries want al-Assad gone , Pew Research finds .