The Royal Navy has unveiled some of the ways it plans to counter what the government regards as an increasingly serious threat from Russia to the UK’s undersea infrastructure.
They include new technologies and prototypes, such as unmanned surface vessels, helicopters and autonomous submarine gliders.
The Ministry of Defence said in a statement that the programme was "in direct response to the resurgence in Russian submarine and underwater activity".
The government says there has been a 30% increase in the number of Russian vessels threatening UK waters in the last two years.
Russia says its the UK government that’s being provocative.
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