United Nations envoy Terje Roed-Larsen met Israeli officials Monday for talks aimed at making the UN-imposed cease-fire between Hizbullah and Israel stick while the world body seeks to assemble an international force to back up the overstretched Lebanese army. Roed-Larsen, who arrived in Israel Sunday after two days of meetings with officials in Beirut, told reporters after meeting Foreign Minister Tsipi Livni that the two had discussed the need to halt the supply of arms and ammunition to Hizbullah, while lifting Israel's air and sea embargo on Lebanon. He refused to give further details. The UN envoy, who later had separate meetings with Defense Minister Amir Peretz and Vice Premier Shimon Peres said both Israel and Lebanon appeared keen to preserve the cease-fire, mandated by an August 11 Security Council resolution. "I think it's fair to say that we have been met with very constructive attitudes and suggestions from all parties we've been speaking to so far," he said.