BAGHDAD — A Shiite cleric whose followers have been blamed in some of Iraq's worst violence gave a cautious welcome today to the withdrawal of U.S. combat troops from cities.

Muqtada al-Sadr said he was "filled with hope" but expressed concern that some Americans will remain in urban areas.

The U.S. military was required to pull back combat troops from cities by Tuesday as part of a security pact that calls for a full withdrawal of American forces by the end of 2011.

But some 130,000 U.S. troops remain in Iraq and the military said a small number of them will stay in cities as trainers and advisers at the request of the Iraqi government.

The military also said it will continue to provide intelligence, air power, and medical and logistical assistance to Iraq's fledgling, 650,000-member security force. U.S. troops will go back into cities on missions only if requested by the Iraqis.

The anti-U.S. cleric sought to cast the move as a victory for those who have opposed the American presence in Iraq.

"If it is a real withdrawal, then it is a medal of honor and a bright page in the history of honest Iraqi resistance that has been giving everything for the sake of liberating and serving its people and land," he said in a statement posted on his Web page.