With a victory in Ramadi, the Islamic State controls a city just 70 miles from Baghdad. Many civilians are on the move, and Iraq's armed forces are again looking weak.
The Islamist extremist group says it has seized all of the city in Anbar province, but some Iraqi officials say parts of it are still under the control of government-backed militias.
The raid, carried out on Saturday by U.S. forces, killed Abu Sayyaf, a senior commander. The Syrian Observatory for Human Rights says three other leaders were killed in ground and air operations.
The U.S. says that Abu Sayyaf, a senior leader of the self-declared Islamic State, was killed during a U.S. military operation authorized by President Obama.
Tesfai Kidane, an Eritrean migrant, made his way to Israel, where he was detained. He returned to Africa. It's not clear what happened next, but he was killed recently by the Islamic State in Libya.
In a bulletin, the self-declared Islamic State said the two suspects were "soldiers from the soldiers of the Caliphate." U.S. officials said they were investigating a link to international terrorism.
Izzat Ibrahim al-Douri is the "king of clubs" in a pack of playing cards issued to U.S. troops to help identify Iraqi officials. He is thought to have been instrumental in the sudden rise of ISIS.
Iraq's prime minister is trying to drum up military support against the self-proclaimed Islamic State, which controls parts of his country. He is also looking for billions of dollars in loans.