By John Affleck BAGHDAD -- The United Nations refugee chief said Saturday he is sending a representative to Baghdad to help millions of displaced Iraqis return home, showing a strengthened U.N. commitment to deal with the crisis and confidence in recent security gains. U.N.

The smell of grilled fish and the sound of children's laughter provided moments of joy for many Iraqis Saturday as the government reopened Abu Nawas Street, a famous riverside promenade that has been largely barricaded from the public since the U.S.-led invasion.

The U.S. military has noted a "significant improvement" in the aim of attackers firing rockets and mortars into the heavily fortified Green Zone in the past three months that it has linked to training in Iran, a top commander said Thursday. Lt. Gen.

U.S. and Iraqi troops moved into a Sunni neighborhood in southern Baghdad on Thursday, while insurgents struck back with car bombs that killed seven people. In southern Iraq, British troops sealed off the border with Iran to prevent weapons smuggling.

By The Associated Press BAGHDAD, Iraq - The Iraqi commander of the Baghdad security crackdown announced Tuesday that Iraq will close its borders with Syria and Iran as word emerged that anti-U.S. cleric Muqtada al- Sadr had fled the country ahead of the drive to pacify the capital. A senior U.S.