GENEVA, SWITZERLAND - FEBRUARY 23: Flags outside the United Nations (UN) Office as the fourth round of the intra-Syrian talks begin in Geneva, Switzerland on February 23, 2017. The fourth round of the intra-Syrian talks began in Geneva marking the first time the Syrian regime and opposition delegations have returned to the Swiss city since talks were suspended last April. (Photo by Mustafa Yalcin/Anadolu Agency/Getty Images)
