U.S. Army chaplain Geoffrey Bailey leads soldiers on a tour of St. Elijah's Monastery on Forward Operating Base Marez on the outskirts of Mosul, 360 kilometers (225 miles) northwest of Baghdad, Iraq, in this Nov. 7, 2008, file photo. The oldest Christian monastery in Iraq, St. Elijah’s stood as a place of worship for 1,400 years. Satellite photos obtained by The Associated Press confirm that the monastery in Iraq has been reduced to a field of rubble, yet another victim of the Islamic State's relentless destruction. (AP Photo/Maya Alleruzzo, File)