US Secretary of State John Kerry has arrived in Baghdad in an unannounced visit for talks with Prime Minister Maliki and other Iraqi leaders.
He is expected to press Prime Minister Nuri al-Maliki to form a more inclusive, less sectarian government to quell a Sunni insurgency that has swept much of northern and western Iraq.
State Department spokeswoman Jen Psaki said Kerry would:
"Discuss U.S. actions underway to assist Iraq as it confronts this threat and urge Iraqi leaders to move forward as quickly as possible with its government formation process to form a government that represents the interests of Iraqis."
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."