This was a classic story of betrayal.
Edward Devenney was employed by the Royal Navy to protect this country from potential threats to our security.
Instead, he pursued a course of conduct likely to put his country at risk.
We rely on the men and women of our armed forces to keep us safe. It is hard to imagine a greater breach of that role than Devenney's actions.
A submariner has been jailed for eight years for trying to disclose the secret movements of British nuclear submarines to "Russian spies".
Submariner Edward Devenney has admitted collecting top secret naval codes before meeting two men he believed were Russian spies