The tone was harsh in the speech of Russian President Vladimir Putin on September 21, in which he said that the West had exceeded all limits of aggression against Russia.
Dmitry Medvedev, the deputy chairman of the Russian National Security Council, says that he is not afraid to use nuclear weapons to defend the regions that will be incorporated into Russia.
However, experts say they are not convinced that Putin wants to be the first to use nuclear weapons since the United States dropped bombs on Japan in 1945.