President Barack Obama published his Authorization for Use of Military Force (AUMF) letter to Congress to help “degrade and defeat” the Islamic State militant group.
A Sunni uprising against Iraq's Shiite-led government resulted in significant security concerns for the country since the United States' withdrawal in 2011. The Sunni insurgent group, known as the Islamic State of Iraq and Syria (ISIS) and the Islamic State of Iraq and the Levant (ISIL), is considered as an al-Qaeda offshoot with thousands of fighters supporting the mission.
