Exactly. I remember many years ago there was a weird story about an FBI (?) agent that confronted a Russian ambassador outside their embassy trying to get him to look into some information he had come across. He was talking about "something they were going to do" and that they "had to be stopped".

Then, there was a manhunt for the agent with media saying he was mentally unstable and a threat to himself. I think they eventually found him suicided and then they arrested another agent that worked with him for child porn.