sent to Iraq would enjoy immunity from prosecution in possible Iraqi courts.

With this agreement, Washington overcame the obstacle task while accelerate to support the U.S. presence in Iraq in facing gains made by “ISIL” militants .

Josh Earnest , White House spokesman informed journalists that "Supreme Commander will not make a decision that puts our men and women in harm without getting some necessary assurances."

The U.S. Department of Defense (Pentagon) said that it hopes that the U.S. forces can improve the evaluations of U.S. intelligence which is still not clear about the situation in Iraq, including the type and quantity of US-made weapons seized by militants from the Iraqi army.

Col. Steve Warren, spokesman for Pentagon said that so far it any evidence that the gunmen took control of the US-made sophisticated weapons does not exist. But he added that it is likely that they had seized weapons and perhaps a small US-made Humvee vehicles.

Obama announced on Thursday that he would send up to 300 U.S. military advisers to Iraq for non-combat roles and will examine specific strikes on the militants.

The U.S. government has expressed its satisfaction that it has received assurances from the Iraqi government. The spokeswoman for the U.S. State Department , Marie Harff said that the deal would give soldiers similar protection to those enjoyed by workers in U.S. diplomatic mission in Baghdad.

Harff added that "our soldiers will enjoy legal protection that they need to carry out their mission.