This may, in the end, be for the best - if it dents American power over the long term.
I like America and Americans very much, but no state should wield the kind of power the United States currently holds, precisely for the reasons the Trump administration exemplifies. When a responsible government is in office, all is well and good. But when the political winds shift and a more capricious actor takes charge, such concentrated power can become dangerous.
I hope America’s allies have taken note and will adjust their policies accordingly.
You know what follows a power vacuum? War. I would rather have a status quo that feels at times chafing than the opportunity for everything to get absolutely horrendous in the not too distant future.
Nope, war is perpetuated by unhinged leaders and governments which enable them. When Bismarck created the concert of Europe, there was peace for the most part of that time period within Europe, when every power was curtailed by the other. When Bismarck was expelled and Wilhelm II took things in his own hands, WW1 happened.