FILE PHOTO: Russian Deputy Defence Minister Anatoly Antonov arrives for a news briefing on the situation in Syria, at the Russian Defense Ministry in Moscow, Russia, October 7, 2016. REUTERS/Maxim Zmeyev
FILE PHOTO: Russian Deputy Defence Minister Anatoly Antonov arrives for a news briefing on the situation in Syria, at the Russian Defense Ministry in Moscow, Russia, October 7, 2016. REUTERS/Maxim Zmeyev