Nuclear war 'must never be unleashed', says Russian embassy despite TV report on impact of attack on Ireland

Discussion on Russian state television of the impact a Russian nuclear device would have if detonated off the coast of Donegal. Video via Twitter

Russia believes there can be no winners in a nuclear war and it "must never be unleashed", its embassy in Dublin has insisted — despite state television graphically describing how one of its nuclear torpedoes could wipe out Ireland and Britain.

The report details how a torpedo with an explosive capacity of 100 megatonnes, which explodes 300kms north-west of Donegal would create a 500m high tidal wave that would plunge the countries "into the depths of the sea".