An even better story if you dug deeper was that Vassell was spotted relatively early and in the MI5 tradition, XX Committee style, used to feed the Soviets doctored information on UK's nuclear subs, hence the Soviet navy had many technical problems with their subs.
An even better story if you dug deeper was that Vassell was spotted relatively early and in the MI5 tradition, XX Committee style, used to feed the Soviets doctored information on UK's nuclear subs, hence the Soviet navy had many technical problems with their subs.