Twelve years ago, FBI agents in Baltimore sought to wiretap former Brookings Institution analyst Igor Danchenko on suspicions he was spying for Russia. But the counterintelligence analyst they were assigned to work with ‒ Brian Auten ‒ told them he could not find their target and assumed the Russian national had fled back to Moscow. But Danchenko had not left the U.S., court documents show. He was living in the Washington area. In fact, he had been arrested in Maryland in 2013 by federal Park Police for being drunk and disorderly, something the FBI analyst could have easily discovered by...