Gorbachev's meeting with Prime Minister Margaret Thatcher ... He was the most senior Soviet spy to defect during the Cold War. Documents declassified in 2014 showed that Britain considered Gordievsky ...

For more than a decade, as Cold War tensions threatened to escalate into all-out war, Mr. Gordievsky, a senior KGB officer, passed intelligence to the British spy agency MI6, sharing secrets that ...

Gorbachev's meeting with Prime Minister ... He was the most senior Soviet spy to defect during the Cold War. Documents declassified in 2014 showed that Britain considered Gordievsky so valuable ...

Oleg Gordievsky, a high-ranking KGB officer who spied for the West during the height of the Cold War, has died in England at the age of 86.

In 1984, Mr Gordievsky briefed soon-to-be Soviet leader Mikhail Gorbachev ahead of his first visit to the ... He was the most senior Soviet spy to defect during the Cold War. Documents declassified in ...