What's Australia doing?
Around $1.5B (AUD) so far, Bushmasters, 50 M1A1s, M113s, training, etc.
We didn't sign the Budapest Memorandum, neither are we part of NATO, but we do our part, as we did in Afghanistan, Iraq (after the lies about WMD), in the Red Sea and other international events.
Oh and on the articles you quoted, some of the biggest fines were from the UK, which is not part of the EU.
As for tariffs, the US upended 80 years of work on international trade, with Trump applying tariffs without any underlying criteria except his complete misunderstanding of the difference between a trade deficit and bad trade.
The US has maintained its currency's dominance for all of the post WW2 era, which has allowed you to borrow and spend in a currency that everyone else has to support to be able to buy things like oil.
As an American, you should realize that in the last 6 months, the US has decided to abdicate its leadership, and as oil becomes less important to world trade, the USD will start to lose its dominance over trade, which means that your debts will have to be paid back in other currencies while the tariffs do nothing but damage the US consumers and economy in general.
Very dumb on your part.