Britain at 'SIGNIFICANT risk from Putin's new undetectable torpedo-firing submarines'

Russia is developing a fleet of mini-submarines which could pose a "significant" threat to Britain, it has been revealed.

President Vladimir Putin is set to recommission the virtually undetectable Piranha vessels as part of a £230million military spending spree.

Piranhas, which can lay mines and fire torpedoes, were developed but axed during the Cold War.

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