The US has been secretly flying small numbers of drones over Iraq since last year to gather intelligence on insurgents, according to a report in The Wall Street Journal.
A senior US official told the newspaper that the intelligence collected was shared with Iraqi forces, but added: "It's not like it did any good."
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."