I would think so, and it gets harder for them due to globalisation and countries working together economically (well apart from Russia maybe) - because back in

I would think so, and it gets harder for them due to globalisation and countries working together economically (well apart from Russia maybe) - because back in 1949, China, Korea and Japan were basically impenetrable black boxes for most people, where you'd take the CIA's word for it because who knew what was possible or likely in those cultures?