Washington ? President Bush and British Prime Minister Tony Blair, standing united on two turbulent fronts, endorsed giving the United Nations broad control over Iraq’s political future Friday and said a much-criticized Israeli settlement withdrawal plan was a solid move toward Mideast peace.

Blair seconded Bush’s comment about going through a hard time in Iraq, where violence is spreading and casualties are climbing. “It was never going to be easy and it isn’t now,” said the British leader, a strong supporter of Bush’s strategies in Iraq, the Middle East and elsewhere despite harsh criticism and even ridicule at home.

Palestinian and other Arab leaders have been outraged that Bush endorsed Israeli Prime Minister Ariel Sharon’s strategy to keep Jewish settlements on the West Bank and refuse Palestinian refugees the right to return to Israel, a fundamental shift in American policy.

Blair gave unqualified support to Bush’s view that Sharon’s plan represents a step forward — not backward — for Palestinians’ statehood aspirations.

“Let’s not look this particular opportunity in the eye and then turn away,” Blair said. “I don’t think that this ends anyone’s dream.” He urged other nations and international organizations to explore ways to help Palestinian leaders seize an opportunity.

Bush called on the Palestinian people to do their part by finding “leadership that is committed to peace and hope.” The administration refuses to deal with Yasser Arafat.

On Iraq, the two said any retreat from the planned June 30 transfer of power from the U.S.-led occupation authority to Iraqis would be unthinkable — despite the recent violence. The United States has about 130,000 troops in Iraq, while British soldiers make up the next-largest contingent, with 12,000.

Bush said of the Iraqis, “If they believe that we’ll cut and run, in other words, if times get tough, we’ll just say, ‘See you later,’ nobody is going to take a stand for freedom and liberty.”

The leaders, hoping to put a more international face on the U.S.- and British-dominated coalition, warmly welcomed a work-in-progress proposal from U.N. Iraq envoy Lakhdar Brahimi on transferring sovereignty.

Brahimi envisions a caretaker government led by a prime minister, with a president, two vice presidents and a conference to create a consultative assembly with no legislative powers. The envoy is due to report his plan to U.N. Secretary-General Kofi Annan, then return to Baghdad for more talks.