You underestimate the ambition of the Russian bear. China and Russia have always been old enemies, but they are forced to stay warm by the United States and the West.

AIIB is a sharp weapon for RMB globalization in China. The Russians don't want China to be an unparalleled behemoth. Besides, it is not at the end of its tether. It has hundreds of billions of dollars in foreign exchange reserves to fight the financial crisis. Until the last minute, I will never join this institution led by China to help China establish RMB influence in the world.

Russia has plenty of energy, but it would rather sell it to Japan than China. His demand is that China must invest in Russia in exchange for Russian energy, but China would rather invest in Africa than him, because China does not want Russia to become a giant bear armed to the teeth again.

Now the west is sanctioning Russia. In order to break isolation and maintain foreign trade, Russia has no choice but to sell a lot of energy to China, but he regards this phenomenon as China fishing in troubled waters.

Now do you understand why he didn't join?

Off-topic: China's strategic weapons can hardly reach the United States. So, who is China's huge strategic weapon for? Can you sleep well with such a manic giant bear lying beside you?