My Gramma used to talk about China taking over the world back in the 60s. If she knew it then these so called leaders should have known as well.
They have been doing it in subtle ways, just like your grandmother said. The Russians are also in on it. Remember when Khrushchev said "we will bury you"? He was not joking. The commies have made great use of the Useful Idiots in the west and have been the driving force behind such inanities as "global warming/climate change", gender dysphoria, racial tensions, political correctness, etc. The useful idiots may be true believers in all their nonsense, but they are unwitting (and often witting) agents of the commies. Their goal is destruction of the West.