U.S. Secretary of State Condoleezza Rice mocked anti-American cleric Muqtada al-Sadr as a coward on Sunday, hours after the radical leader threatened to declare war unless U.S. and Iraqi forces end a military crackdown on his followers.

Rice, in the Iraqi capital to tout security gains and what she calls an emerging political consensus, said al-Sadr is content to issue threats and edicts from the safety of Iran, where he is studying. Al-Sadr heads an unruly militia that was the main target of an Iraqi government assault in the oil-rich city of Basra last month, and his future role as a spoiler is an open question.

“I know he’s sitting in Iran,” Rice said dismissively, when asked about al-Sadr’s latest threat to lift a self-imposed cease-fire with government and U.S. forces. “I guess it’s all-out war for anybody but him,” Rice said. “I guess that’s the message; his followers can go to their deaths and he’s in Iran.”