By Laila Bassam BEIRUT, May 14 (Reuters) - Lebanon will demand Israel cease fire at face-to-face talks in Washington on Thursday, a senior Lebanese official said, as Iran-backed Hezbollah and Israel continued to trade blows despite a U.S.-backed truce declared last month. The talks between Lebanese and Israeli envoys will mark the sides' third meeting since hostilities reignited between Hezbollah and Israel on March 2. Beirut is attendingdespite strong objections from Shi'ite Muslim Hezbollah.
