Europe doesn't have the capability to deploy a decent size expeditionary force. The US has spent decades fully integrated into the European force structure. For example when US invoked article 5 during the war on terror. NATO countries that deployed troops overseas leaned heavily on US logistics support for those troops deployment to help defend US interests in the Middle East. Kind of interesting that the US was the only NATO country to invoke Article 5 but now wants to walk away from European security interests start become pressing.
What the table shows is a lot of countries have increased defense spending the last several years. Plus two recent entries into NATO, Sweden and Finland both bring considerable military capability. Finland has been preparing for decades for the Russians to come back. Also Europe heavily depends on US arms manufacturers and the US actively encouraged this even Trump and a lot of military contracts are backlogged on orders. Some European countries have been slower than others but overall a lot of the East European countries have been heavily spending on Defense capabilities as soon as Russia invaded Ukraine in 2014. So I agree not all European countries have taken it seriously up to now.
I think a couple of questions are very front and center right now.
Can the US be depended on to supply arms to Europe and Ukraine under a cash and carry arrangement?
Can the US be depended on to continue to provide unique services like space based assets to NATO and the Ukraine conflict?
If you think endless war is bad, wait until you have a short war that you lose.
I generally agree with that. But at the same time I maintain large parts of Europe have for years relied too much on a combination of hope that nothing happens and relying on the US if it does. There have been exceptions and you are correct some have stepped up years ago. Unfortunately when the big players are the one's not doing that it's noticeable.
The timing is more to do with shifting sentiment of isolationism. And to be fair Ukraine isn't NATO, I can be unhappy about the way it's being handled but I can understand that argument. And yes I know they sent troops to Afghanistan. I also think there are legitimate reasons we are not able to continue fully supporting Ukraine, mostly related to being ready for a future possible war with China. If you think Europe is willing and able to help us there at all (even before this week) I have a bridge to sell you.
Those are both good questions.
I am also curious if Trump will even allow arm sales to support Ukraine today with his latest statements. His strategy to end the war seems to involve giving Russia everything they want. That it's easier to cutoff Ukraine than to get Russia to make concessions at the table. It also ignores the backlogs you mentioned earlier as well. And I can name several that are unfortunately very critical to Ukraine but very critical to a potential war with China and would be off the list for a long while.
The second I don't even begin to have enough information to have a clue about. I would guess as long as NATO still exists that little will change there but I have no basis to support it.
I'm wary of a short war with China that we lose. And that's the only reason I am less than onboard with continued full support to Ukraine however much that morally bothers me.