Members of Russian and Syrian forces stand guard near posters of Syrian President Bashar al-Assad and his Russian counterpart Vladimir Putin at the Abu Duhur crossing on the eastern edge of Idlib province on August 20, 2018. - Civilians are coming from rebel-held areas in Idlib province and entering regime-held territories through the Abu Duhur crossing, some of them returning to their villages that were recaptured by the regime forces earlier this year. (Photo by George OURFALIAN / AFP)
Russian and Syrian forces standing guard at the Abu Duhur crossing on the eastern edge of Idlib province, Syria. George Ourfalian / AFP

Russia says over 63,000 troops have fought in Syria