'So incompetent': Donald Trump scorches Biden administration on Afghan withdrawal
President Trump ensured that Russia and China couldn't attack Ukraine or Taiwan because he went after their economies. He was waging and winning an economic war against those two nations that rendered them incapable of doing anything. They couldn't afford to do anything, either because he had already left them without enough resources (Russia), or because he threatened even more economic attack if they dared to do anything (China).