Abbas made the demands in a speech to the new Hamasdominated parliament, after legislators were sworn in by collective oath. Hamas controls 74 of 132 seats, but Abbas retains considerable power as Palestinian Authority president, controlling foreign affairs, security and peace negotiations.

After the session, both Abbas and Ismail Haniyeh, Hamas' choice for prime minister, said they would try to resolve their deep differences through dialogue. However, several Hamas legislators said the group would never agree to negotiations with Israel.

Hamas is pledged to Israel's destruction, opposes peace negotiations and has said it is not moderating its ways, despite international pressure and threats of Israeli sanctions. Abbas has not yet decided whether he'd fire a Hamas prime minister who rejects his policies, Abbas aides have said.

After leaving parliament, Abbas told reporters: "Why assume that there will be crisis? Let us resort to dialogue.

Everything comes through dialogue." Israeli government officials declined to comment.