the former mi6 officer george blake, who became one of the cold war‘s most infamous double agents, has died at the age of 98. as a soviet spy, he betrayed hundreds of western agents in eastern europe. our moscow correspondent steve rosenberg reports. he had a russian home, a russian wife, even a russian name, georgi ivanovich, but george blake was a british intelligence officer who became one of the most notorious double agents of the cold war. he spied for the soviets for nearly a decade. newsreel: ..followed by mr george blake... blake had spent three years in captivity in north korea. by the time he returned to britain in 1953, he was a committed communist. posted to berlin by mi6, he became a kgb mole. he would take the train to the soviet sector, hand over data on western intelligence operations and western agents, and then drink champagne with his kgb handler. i don't know, maybe 500, 600.