TOPSHOT - Syrians wave at passengers riding a train across Aleppo's devastated eastern districts for the first time in more than four years, on January 25, 2017.
It is the train's first such trip since rebels overran east Aleppo in the summer of 2012, effectively dividing the northern city into a regime-held west and a rebel-controlled east. / AFP / George OURFALIAN        (Photo credit should read GEORGE OURFALIAN/AFP/Getty Images)