Is There a Strategy for Countering Russian Spies in the West?

A Russia snitch writes, I don't think that the calls for nullifying Russian visas into the EU are intended against Russian citizens as much as it's a knee jerk reaction to prevent spying. Heaton: My suspicion is that Russia probably already has plenty of spies floating around the West and that it would not make a significant material difference to impede potential new spies coming in. A lot of the time they send over honeypots. It was an estimated, I think there was an estimated 100,000 spies in Washington DC alone during the Cold War.