At least tRump has been consistent (if wrong) on this as he always talked up tariffs. We know he is a failed businessman and maybe someone talked him into it, but nobody on his team has the guts to contradict him. From what I've seen these rates were calculated based on the balance of trade with each country, so not necessarily for them taxing US goods. They even put tariffs on islands where only penguins live.
I would expect international trade to be based on talking first, but tRump threatens first. Treating your allies like this is bad. It seems there are no tariffs on Russia.
What will the US do if big nations says... Ok, screw the dollar, we are going to use X.
War?
The BRICS plans have been somewhat derailed by Russia's invasion of Ukraine and the resultant fallout, but US belligerence could certainly push Russia and China closer than they have been since the Soviet era, even if they're just allies of convenience. The Bretton-Woods system and petrodollar have both already collapsed, and it's just a matter of time before the consequences are openly acknowledged. Crypto, gold, and silver are probably safe bets for the long term against the dollar. I'm not convinced the Euro is any better.
China could gain from this and Putin may be pulling strings.
Not that X I assume. The dollar may lose value. You might say it's less 'great'.
That process has started already (smaller nations are already stepping away from the dollar), and if this madness continues, more are going to opt for an alternative.
No point in tariffs when there are trade sanctions. Weird how restricting trade on adversaries is punitive, but restricting trade on your citizens is beneficial though.