Caught between a stalling U.S. pullout, Israeli 'alliance' and Idlib militias, Russian president finds his monopoly over Assad's resurgence may require some flexibility. Russian President Vladimir Putin can indeed credit himself with an important military accomplishment after transferring control of most of Syria’s territory to Syrian President Bashar Assad, but it seems this diplomatic minefield is presenting new and unexpected challenges for him that could erode the military achievements. The diplomatic plan Russia drew up looks, on its face, to be orderly and logical. According to the plan, Russia was already meant to be withdrawing some of its forces from...