Iraq's deadly Shiite militias are lurking in the shadows.
The U.S. has said it is willing to deploy advisers and attack helicopters to help Iraq retake Ramadi.
Governor of Anbar is "excited" at the prospect of recapturing Anbar's provincial capital, says spokesman.
The strikes destroyed a number of the Islamic State's strategic assets around the capital of Anbar province
The best way to defeat ISIS is for the U.S. to ally with the Tehran-backed militias.
Iraq's prime minister predicts a short campaign but analysts warn of sectarian fallout.
ISIS's victory has upset the Kurdish policy of first defeating ISIS before establishing an independent Kurdish state.
A spokesman for the Shi'ite militia said the code name for the new operation would be "Labaik ya Hussein."
Islamic State militants advanced in armored vehicles from Ramadi towards the base where the Shi'ite paramilitaries were massing for a counter-offensive.
Jake Bilardi, 18, suspected of suicide attack in Ramadi and may have considered attacks in Australia.
Terror group detonate seven simultaneous car bombs in city west of Baghdad.