Watch his full documentary, he explained why he left knowing what's at stake and risking his life to let the truth out, he did it on moral ground, he couldn't lie to himself anymore with the direction the Soviet Union was going, he grew up as a "political upper class" that benefited from socialism, he is former kgb, he questioned himself why he should do what he did when he had such a great life living comfortably and deceiving other foreigners in politics that hold power, the documentary has a bunch of pictures of him with explanations of what his biography was. He escaped by hiding among the socialist left college hippies smoking pot all day, the kgb was terrifying in their plans