The IDF is in a heightened state of alert ahead of the Annapolis summit next week, out of fear that Hamas and Islamic Jihad will try to perpetrate a large-scale terror attack to derail the Israeli-Palestinian peace talks, defense officials said Sunday. The officials said there were currently 10 specific warnings concerning Palestinian plans to launch a terror attack before the summit. The officials said that while there was no concrete intelligence that the warnings were connected to the peace summit, which is scheduled to be held at the Annapolis Naval Academy next Monday, the assumption was that terror groups - particularly Islamic Jihad and Hamas - would try to perpetrate an attack to spoil the peace efforts. "There is a concerted effort today by Hamas and other terror groups to derail the talks," a defense official said. "One of the ways to do that is to carry out a large-scale attack inside Israel."