Dmitry Medvedev issued a strongly-worded statement, condemning a recent US decision allowing Ukraine to launch missiles into Russian territory.

Russia has warned that it will retaliate with full-scale nuclear war after Ukraine fired long-range US missiles at its territory for the first time. Vladimir Putin's foreign minister Sergei Lavrov said that the attack showed that western countries wanted to “escalate” the conflict and that Russia will now “react accordingly”.

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Vladimir Putin has signed a decree regarding state policy on nuclear deterrence. The document has been published and is already in effect. The updated doctrine suggests that a basis for a nuclear attack could be "aggression against the Russian Federation and its allies by any non-nuclear state with the support of a nuclear state,