A large explosion occurred at the naval base of Severomorsk, a major nuclear submarine port in Russia, with thick smoke rising.

This is the main base of the Russian Northern Fleet, located in the Kola Bay near the Barents Sea. It houses two-thirds of Russia's nuclear-powered submarines, including the Yasen, Oscar II, Sierra II, and special-purpose submarines.

Source: https://www.toutiao.com/article/1833732027351308/

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