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LeopoldBloom Yes, I think colonialism is very appropriate description, and like any mortgage or hire-purchase agreement the property is the lender's until the debt is fully cleared. China's choice of which countries is very careful too. No longer oil, but now based heavily on metal-ore and engineering-business wealth, so it can corner the markets in the finished metals if not all of the metal products as well.
For we all depend on metals for everything we do, use or own. That is basic, but maybe is it because it is so basic it is often overlooked despite the present talk of rare-earth ones for electricity-generators. Indeed, if you were to ask a large number of people at random which one metal
element is fundamental to all, it would be interesting to see what proportion answers correctly. Fortunately it is a very abundant metal, very versatile, readily recoverable (though at high electricity or fuel cost) - and China has not grabbed all of its sources.
I think Chairman Mao's reign was very much a personality as well as Party cult, but looking back at what happened after his death, I can't help wondering if China opening up and becoming friendlier was all a long-term ruse to lull the rest of us into a sense of false security. Even if it wasn't, it certainly gave President Xi's government a huge advantage so he clamp down again without too many difficulties.