It's all kind of incestuous. However the US grants some of it's contacts license to work with other agencies. As long as they share everything back into CIA. On top of that we have an open service where foreign travelers or spies can just check in and report random stuff they've seen or heard and want us to know.
It's all kind of incestuous. However the US grants some of it's contacts license to work with other agencies. As long as they share everything back into CIA. On top of that we have an open service where foreign travelers or spies can just check in and report random stuff they've seen or heard and want us to know.