Palestinian factions began three days of official talks in Cairo on Thursday aimed at agreeing on a conditional cease-fire with Israel to end three years of tit-for-tat violence, a Palestinian official said. The cease-fire is key to reviving deadlocked peace moves. Officials from 13 Palestinian factions began the talks in a secluded intelligence camp south of Cairo. Palestinians agreed a truce in June but the Israelis were not party to it. It collapsed in August. Hamas and Islamic Jihad, groups that have led a suicide bombing campaign in Israel, expressed willingness to stop attacks against Israeli civilians if Israel reciprocated. Full Story