Russia on Wednesday called on the UK to investigate the "dangerous" actions of a British navy ship, which Moscow said entered its territorial waters in the Black Sea and was subjected to warning shots. The Russian defence ministry said that the incident, which the UK denied had taken place, was a "gross violation of the UN convention" and called on London to "conduct a thorough investigation of the actions of the crew". Russia's foreign ministry said that the British ambassador to Moscow would be summoned over the incident. emg/acl/kjl