Remember that bit about no ground troops in Iraq? Well, we can scratch that one off the list .

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A senior White House official said on Wednesday that the United States would consider using American ground troops to assist Iraqis in rescuing Yazidi refugees if recommended by military advisers assessing the situation.

Benjamin J. Rhodes, the deputy national security adviser, told reporters on Martha’s Vineyard that President Obama would probably receive recommendations in the next several days about how to mount a rescue operation to help the refugees, who are stranded on a mountaintop surrounded by Sunni militants. He said those recommendations could include the use of American ground troops....
The catch is, of course, they won't be there to engage in combat. They'll be there to, um, not engage in combat, or something.

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...

"What he’s ruled out is reintroducing U.S. forces into combat on the ground in Iraq," Mr. Rhodes said. He added, using an alternative name for the militant group, that the deployment of ground troops to assist a rescue was "different than reintroducing U.S. forces in a combat role to take the fight to ISIL."

He acknowledged that any ground troops in Iraq would face dangers, even if they were there to help the refugees find a safe way off the mountain. He said that like American forces anywhere, the troops would have the ability to defend themselves if they came under fire....
So, to clarify, the ground troops won't be there to engage in combat, unless they do. Got it.

Onward and upward,
airforce