Worse than Aldrich Ames who single handedly shut down the CIA's "eyes and ears". In 1985 the names of every "human asset" that the U.S. had working for it in the USSR.
He sold the KGB the names of twenty-five "sources." These twenty-four men and one woman, all Russians, were immediately arrested and ten were sentenced to what the KGB euphemistically referred to as vyshaya mera (the highest measure of punishment). The condemned person was taken into a room, made to kneel, then shot in the back of the head with a large caliber handgun so his face would be made unrecognizable. He compromised every CIA operative in the Soviet Union. -
So, you are telling me that Pollard was worse than that?
Ames, Walker, it does not matter who you name.