With US set to arm rebels, it enters a tangle of rivalries around Syria's rebel factions

  • by: SARAH EL DEEB , Associated Press
  • Updated: June 20, 2013 - 6:53 PM

BEIRUT — Syria's rebels have received shipments of more powerful weapons from Gulf allies in recent weeks, particularly anti-tank and anti-aircraft missiles, that have already helped stall aggressive new advances by regime forces.