A Sukhoi Su-24 fighter jet lands at the Hmeymim air base near Latakia, Syria, in this handout photograph released by Russia's Defence Ministry November 7, 2015. Turkish fighter jets shot down a Russian-made warplane near the Syrian border on November 24, 2015 after repeatedly warning it over air space violations, Turkish officials said, but Moscow said it could prove the jet had not left Syrian air space. REUTERS/Ministry of Defence of the Russian Federation/Handout via Reuters ATTENTION EDITORS - THIS PICTURE WAS PROVIDED BY A THIRD PARTY. REUTERS IS UNABLE TO INDEPENDENTLY VERIFY THE AUTHENTICITY, CONTENT, LOCATION OR DATE OF THIS IMAGE. THIS PICTURE IS DISTRIBUTED EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO RESALES. NO ARCHIVE.