ISIL captured territory in Iraq, including Mosul, and parts of Syria, following its 2011 withdrawal. The US military returned to Iraq in June 2014 to fight ISIL as part of Operation Inherent Resolve.

The text references the rise of ISIL in Iraq after 2011, their capture of Mosul and parts of Syria, and the subsequent return of the US military in June 2014 to combat ISIL under Operation Inherent Resolve.