Russia is ready to use all types of weapons, including nuclear weapons, if it feels threatened, Dmitry Medvedev, the Deputy Chairman of the Security Council of the Russian Federation, said, Report informs, citing TASS.

He said this is in line with security doctrines: “If Kyiv attacks Crimea or the territory of Russia, anything can happen as a response. This retaliatory measure will be swift, tough, and decisive.”