According to RT, the Russian news channel, Vladimir Putin was thinking of a possible nuclear showdown with the West when he invaded Crimea:
The president assured that the Russian military were prepared for any developments and would have armed nuclear weapons if necessary. He personally was not sure that Western nations would not use military force against Russia, he added.
–Putin in film on Crimea: US masterminds behind Ukraine coup, helped train radicals,” RT, March 15,, 2015 (updated 17:36).
This is but the latest of Putin’s veiled nuclear threats, to which to the writer’s knowledge, neither the U.S. nor NATO have ever responded publicly.
The Trenchant Observer