BEIRUT: Regional powers are pouring in money and guns, jihadists are joining rebels battling to overthrow Bashar al-Assad, while his own well-armed but hard-pressed forces are fighting back ruthlessly with combat aircraft and artillery. Gruesome scenes of slaughtered civilians or executed rebel fighters provide daily snapshots of the worsening conflict in Syria. Video apparently showing rebels gunning down Assad militiamen in cold blood suggests the insurgents are capable of brutality to match their enemies. [Link]