The Russian military has deployed and sustained major forces on or near Ukraine’s border, raising significant concerns in Washington and other NATO capitals that the Kremlin may be planning a new assault on its western neighbor. Meanwhile, Moscow has demanded security guarantees for Russia and indicated that it otherwise will take unspecified “military-technical” measures. Michael Kofman, Research Program Director in the Russia Studies Program at CNA, will discuss the Russian build-up, the military options it gives the Kremlin, and how a Russia-Ukraine conflict might play out.