Islamist militants have overtaken parts of Iraq's second-largest city, driving security forces from their posts and seizing key government buildings.
Thousands of civilians have been forced from their homes in the fighting, as militants raised the black banners that are the emblem of the Islamic State.
The militants overran police stations and prisons, setting free detainees who were spotted running in the streets in their prison uniforms.
The Foreign Secretary has been clear on the threat of Isis, but he has ruled out the prospect of any UK military involvement in the crisis.
Iraq’s foreign minister, Hoshyar Zebari, is a natural diplomat. Polite, immaculately dressed, and blessed with a great memory.
Isis has paraded military equipment in Mosul it captured from when the Iraqi army fled in what some see as a "nightmare scenario."