Syrian opposition say rebels should retaliate against army; hint at talks exit

By Suleiman Al-Khalidi AMMAN (Reuters) - Senior Syrian opposition negotiators on Sunday urged rebels to strike back against the Syrian army, accusing it of using a cessation of hostilities to gain ground, and cast doubt over whether they would continue Geneva peace talks indefinitely. A senior opposition figure who asked not to be quoted by name said pressure was growing for a speedy decision to leave talks. In a internet message to fighters on the ground, chief negotiator Asaad al-Zoubi said th