> China pollutes more than the US.
The US outsources pollution to China by outsourcing manufacturing of things that US environmental laws make extra costly to manufacture in the US. Then out of the other side of its mouth the US criticizes China for being a polluter.
Also, accounts of US pollution do not consider the pollution caused by US wars and occupations, which are the single most polluting thing ever done by mankind. China may edge out US private sector pollution, but it's hard to compete with years of oil field fires.
> they are gearing up for a conflict to obtain hegemony
China does not have natural borders (oceans) like the US, so it has more regional vulnerabilities. I don't think there is evidence that China's policies reveal anything more than the typical effort to protect against regional weaknesses.
> Look at countries that fell into the US sphere of influence.
Such as Iraq, Kuwait, Saudi, Colombia, El Salvador, Nicaragua, Mexico, The Philippines? For the most part, US influence is horribly destructive to the democratic process and civil society of any nation it touches.
With respect to European wars, the US eventually decided to stop selling IBM tech to Hitler and to step in and enter the war, but it was already too late to prevent the worst atrocities. Of course the US narrative is that the US saved Europe from self destruction.