The Kremlin has tried to calm tensions in a feud between Trump and Medvedev that spiraled into nuclear threats.

Rolf Mützenich, former leader of the SPD parliamentary group in Germany's Bundestag, has criticised a "nuclear exchange" between the United States and Russia, calling it irresponsible. Source: German newspaper Der Spiegel,

The Kremlin tried Monday to defuse tensions caused by remarks from one of Russia’s top officials that led President Trump to shift two nuclear submarines closer to Moscow. “As you know, Russia holds a responsible position.