moscow russian president vladimir putin say wednesday complete victory achieve islamic state militants bank euphrates river syria comment release kremlin putin say military operation area finish focus would switch political process would eventually involve presidential parliamentary elections putin specify whether refer end military operations whole syria areas around euphrates valley russia military intervention syria civil war 2015 turn tide conflict favor moscow ally syrian president bashar al-assad rebel group fight oust western governments right group allege russian air strike kill civilians allegation moscow deny two hours ago russian defense minister report operations eastern western bank euphrates complete total rout terrorists putin say naturally could still pocket resistance overall military work stage territory complete repeat total rout terrorists say need ... move undoubtedly next stage start political process putin also say important establish congress syrian people propose peace conference russia offer host would lead preparation new constitution presidential parliamentary elections big prolong task say putin declare `` complete victory `` bank euphrates syria