Russia's military intervention in Syria has spurred speculation that a common enemy - Islamist extremists - could soothe tensions between Moscow and the West and help in the lifting of sanctions over tensions in Ukraine. However, both sides are unwilling to step down over Russia's annexation of Crimea, raising concerns that tit-for-tat sanctions are here for the long-run and could even be increased.
Russia's War Against Ukraine
CNBC: Why sanctions against Russia are here for the long-haul
Servicemen of the Ukrainian National Guard take part in a military training at the National Guard training center in the village of Stare, some 70 km outside Kyiv, on Oct. 2, 2015.
