According to reports from Iraq, the United States has agreed to the broad outlines of a plan to withdraw all but a small number of American troops from the country in two phases over the next two years — 10 years after Operation Inherent Resolve was established to vanquish the terrorist group ISIS in Iraq and Syria. 

The agreement has prompted warnings from lawmakers and national security experts that the move sends the wrong signal to Iraq and could jeopardize operations against ISIS across the border in Syria.