Sunni militant fighters have gained full control over Iraq's biggest oil refinery, in Baiji, north of Baghdad, according to media reports.
Isis and other Sunni groups have been attacking the refinery for the past ten days. The complex supplies a third of Iraq's refined fuel and the battle has already led to petrol.
A rebel spokesman told the BBC that the refinery would be handed over to local tribes to administer, and the fighters would continue their march towards Baghdad.
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."