Syrian rebels say army attacks wrecking ceasefire efforts

AMMAN (Reuters) - Syrian rebel groups who have participated in peace talks said on Sunday that an upsurge in Syrian army shelling and bombing was wrecking the prospects of maintaining a Russian-Turkish-brokered ceasefire. The rebel groups, mostly backed by Turkey, who attended two rounds of talks in the Kazakh capital Astana said they had supported a political solution to end the bloodshed, but that war had been "imposed" on them by the Syrian army and its allies. In a statement, they said they reserved the right to respond to these attacks, which have mostly taken place in the south, in Homs and in the outskirts of Damascus. (Reporting by Suleiman Al-Khalidi; Editing by Kevin Liffey)