American officials have said that US Special Operations Forces have landed on top of the Sinjar Mountains.
It is understood troops will assess the possibility of a humanitarian mission to rescue the Yazidi refugees under threat of Islamic State (IS) rebel forces.
Officials have told NBC News that US military forces will assess how best to carry out a rescue mission.
The information gathering mission will form the basis of plans on how to safely carry out the operation, with recommendations forwarded to the Pentagon and White House for approval "within days."
Kurdish Peshmerga fighters have emerged victorious in the battle for Mosul Dam, but the question is - what will their next move be?
An ITV News team at Mosul Dam was with victorious Kurdish Peshmerga fighters at the complex earlier today.
ITV News joined a Kurdish unit fighting Islamist militants near Irbil and found them using tanks from the 1950s and short on ammunition.