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- Russia has been fortifying its Black Sea Fleet naval base, says the UK's defense ministry.
- The ministry added that the Black Sea Fleet has become less active after its commander was replaced.
- Russia's navy has suffered significant losses since the Ukraine war began in 2022.
Russia has been beefing up the defenses for its Black Sea Fleet naval base in Novorossiysk, the UK's defense ministry said in an intelligence dispatch on Thursday.