This file image posted online on Sunday, Dec. 11, 2016, by the Aamaq News Agency, a media arm of the Islamic State group, purports to show a general view of the ancient ruins of the city of Palmyra, in Homs province, Syria, with the Citadel of Palmyra in the background. Syrian state media said on Thursday, March 2, 2017 that military forces have entered Palmyra in the quest to again take the town from the Islamic State group.