Israeli and Palestinian negotiators held their first contacts since Israel broke off talks after a Gaza ambush two weeks ago in which six Israelis were killed. They're trying to solidify a de-facto truce and arrange a summit between Prime Minister Ariel Sharon and the new Palestinian leader Mahmoud Abbas. Some differences remain about the agenda, so no date for the summit was set. Sharon wants the meeting to focus on ending Palestinian terrorism, while Abbas wants to deal with political issues like Israel's planned pullout from the Gaza Strip this summer. Negotiators will meet again next week. Sharon’s top advisor Dov Weisglass led the Israeli team, while the Palestinian side was headed by Cabinet Minister Saeb Erekat.