NEW : President Vladimir Putin to talk Syria on Obama on Tuesday . this crosses an international , global red line , '' he said . U.S. says it is examining options on how to deal with U.S. . Arab president tells U.S. journalist that Syria is prepared to retaliate if U.S. attacks . Syria crossed 'international , global red line , ' he says .
NEW : President Vladimir Putin to talk Syria on Obama on Tuesday . U.S. says it is examining options on how to deal with U.S. . Arab president tells U.S. journalist that Syria is prepared to retaliate if U.S. attacks . Syria crossed 'international , global red line , ' he says .