Mark first action since France joined international coalition to fight ISIS.
Extremist militants released short clip with captive British journalist.
Hamas denied responsiblity, emphasized pledge to truce.
Agency says group may have up to 31,000 fighters in Iraq and Syria.
President Barack Obama phoned new Iraqi P.M. to discuss commitment to defeating militants.
Report of child's death touches off violence in Jerusalem.
Iran and six world powers will hold their first negotiating round since failing to meet July target date.
Warn others will be killed if Kurdish leaders continue to back U.S.
President Obama has ruled out a combat mission in Iraq.
Moscow insists Syria's alleged nuclear activities be stricken from agenda.
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