The government of Iraq has faced an existential crisis as Sunni militant groups capture major portions of the country and press onward to Baghdad, the capital. The Islamic State of Iraq and the Levant (ISIL), a terrorist organization with previous ties to al-Qaida, is a leading force behind this violent insurgency. In response to these threats, Obama has sent 275 military troops to help secure the U.S. embassy in Iraq and 300 military advisors to assist the Iraqi government, the latter decision announced as this June 20-21 Gallup poll was conducted.
One factor that undoubtedly contributes to the broad support for the withdrawal of troops from Iraq is the enduring unpopularity of the decision to send troops there in the first place. A majority (57%) see the U.S. decision to send troops to Iraq in 2003 as mistake. This reading is identical to what Gallup found in February of this year before the latest round of devastating attacks against the Iraqi government.