COLOR ME SKEPTICAL

An official Iranian delegation arrived in Baghdad on Wednesday to mediate between Shi'ite cleric Moqtada al-Sadr and the United States, a Shi'ite political source said.

The source said the delegation, led by senior diplomats, met Iraqi officials and was expected to travel soon to the holy city of Najaf, where U.S. forces are preparing for a possible offensive to capture or kill Sadr.

Iran said the United States had sought its help in tackling the violence in Iraq. Sadr's political foes say Iran helps finance the anti-U.S. cleric.