In 2014, the Russian Federation conducted two separate phases of operations in Ukraine. Despite substantial differences in the objectives of and methods used within the operations, it is worth noting that their natures have much in common. Both operations were planned and conducted in accordance with the doctrine followed by Gerasimov and on the basis of the concept hybrid warfare.
NATO, for its part, has consciously and conspicuously de-emphasized nuclear weapons in its defense policy and posture since the end of the Cold War. As a consequence, the Alliance now lacks the policies and capabilities needed to deter, and if necessary to respond to, a limited Russian nuclear strike.
– Dr. Matthew Kroenig, 2015, US Senate testimony 
Ukraine is undergoing a very difficult period in its history. The country is bidding farewell to its Soviet past, while the Russian Federation (RF) is attempting to restore the “Soviet Empire” – with Ukraine retaining within its sphere of control. The Ukraine drama has been playing out “online” before our very eyes, and events have developed so rapidly that experts and scholars are not only unable to keep up with all the details, but are experiencing great difficulty making sense of what is happening.