Source on the abandoning decreasing emissions? They're shuttering coal plants, starting the world's largest hydro electric project, pumping out the next generation of EV cars, massively funding green tech etc. And I'm hard pressed to find anything comparable in America's course.
And sure, bears can swim but few can do so over an ocean. Even a casual understanding of modern history or an ounce of common sense should show you how much easier it is to invade a country next door than it is to maintain supply lines across an ocean.
Yeah, they've pretty strongly turned from recent history though. No one in NATO believes the US could be trusted to uphold article 5 anymore. That's the whole issue.
Hell, why doesn't Ukraine have the nuclear deterrnet that it had after the collapse of the Soviet Union? Because they foolishly believed American security promises, which were given in exchange for them releasing their nukes.