There is a reason why china throw Hu in jail - they lost...

There is a reason why china throw Hu in jail - they lost billions because of him, and they have a good reason to put him there too - There are laws against commercial spy.

Another things is there may be spies between Rio tinto and BHP, good on you if you can catch them. As for a nation, there are chinese secret agents in Australia and There are Australian secret agent in China! Catch them if you can.