The United States is fast-tracking deliveries of military hardware, including drones and missiles, to Iraq, a Pentagon spokesperson said in a statement.
The US promise comes after al Qaeda-linked militants took over parts of Ramadi and Falluja, strategic cities on the Euphrates River.
The US ruled out sending American troops to Iraq, two years after Washington ended nearly a decade of occupation.
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ITV News visits the county in the wake of the EU referendum result and finds increasing frustration with Britain's political leaders.
The schoolchildren rescued from the Brecon Beacons during a Duke of Edinburgh exercise were never missing, their headteacher has insisted.
"By killing his children, Mr Sheats will have to live the rest of his life with this horrible memory."