Front Line

TOPSHOT - Iraqi pro-governement forces fire their weapons on a front line in the Albu Huwa area, south of Fallujah near the Euphrates river, on May 31, 2016, during an operation aimed at retaking areas from the Islamic State group. Iraqi forces launched an offensive a week ago to recapture Fallujah, which became an IS group stronghold after its fighters seized the city in January 2014. / AFP PHOTO / MOADH AL-DULAIMIMOADH AL-DULAIMI/AFP/Getty Images

Moadh Al-Dulaimi/AFP/Getty

Iraqi pro-governement forces fire their weapons on a front line in the Albu Huwa area, south of Fallujah near the Euphrates river during an operation aimed at retaking areas from the Islamic State group

Syrian rebel fighter Abu Al Dardaa walks...Syrian rebel fighter Abu Al Dardaa walks towards the front-line as rebels attack regular Syrian army areas in the Salaheddine neighborhood of Aleppo, on July 8, 2013. Syria's rebel prime minister Ghassan Hitto announced his resignation, nearly four months after his appointment and having failed to form a government. AFP PHOTO/STRSTR/AFP/Getty Images

AFP

Syrian rebel fighter Abu Al Dardaa walks towards the front-line as rebels attack regular Syrian army areas in the Salaheddine neighborhood of Aleppo on Monday. Syria’s rebel prime minister Ghassan Hitto announced his resignation, nearly four months after his appointment and having failed to form a government 

Tourists on traditional boats sail in the Beihai military water tunnels on the island of Nangan in the Matsu archipelago...Tourists on traditional boats sail in the Beihai military water tunnels on the island of Nangan in the Matsu archipelago, off northern Taiwan, May 8, 2013. The Matsu archipelago, which was once front line against China, is now a military tourist spot.

Pichi Chuang/Reuters

Tourists on traditional boats sail in the Beihai military water tunnels on the island of Nangan in the Matsu archipelago, off northern Taiwan on Wednesday. The Matsu archipelago, which was once the front line against China, is now a military tourist spot.