Violence in Mosul, Iraq

An elderly man is assisted as families fleeing the violence in Mosul wait at a checkpoint on the outskirts of Irbil, Iraq, June 10, 2014.

Families fleeing the violence in Mosul wait at a checkpoint on the outskirts of Irbil, Iraq, June 10, 2014.

Damaged vehicles belonging to Iraqi security forces are seen during clashes between Iraqi security forces and al-Qaida-linked Islamic State in Iraq and the Levant in Mosul, Iraq, June 10, 2014.

Burning vehicles belonging to Iraqi security forces are seen during clashes between Iraqi security forces and al-Qaida-linked Islamic State in Iraq and the Levant in Mosul, Iraq, June 10, 2014.

This image taken from video obtained from the Iraqi Military shows armored and military vehicles during clashes in the northern city of Mosul, Iraq, June 9, 2014.

This image taken from video obtained from the Iraqi Military shows Iraqi soldiers during clashes with militants in the northern city of Mosul, Iraq, June 9, 2014.

This image taken from video obtained from the Iraqi Military shows an armed Iraqi soldier leaving a military vehicle during clashes in the northern city of Mosul, Iraq, June 9, 2014.

This image taken from video obtained from the Iraqi Military shows Iraqi soldiers during clashes with militants in the northern city of Mosul, Iraq, June 9, 2014.