Russian President Vladimir Putin oversaw the training of the strategic deterrence forces, the country's RIA news agency reported on Wednesday.
The Zvezda military news channel showed Defense Minister Sergei Shoigu telling Putin that the exercises were practicing "delivering a massive nuclear strike by strategic offensive forces in response to an enemy nuclear strike".
Chief of Staff Valery Gerasimov told Putin the exercise involved Yars intercontinental ballistic missiles, submarines and Tupolev strategic bomber planes.
(With input from Reuters)