>>...after all, they argue, we can’t fund Ukraine forever…

If you look at it from the standpoint of percentage of GDP we can.

If you look at it from the standpoint of the majority of weapons systems we're sending them, (systems we were not intending to equip our own forces with - that had to be stored safely for some years then decommissioned) we can - in fact, it represents a cost savings.

If you look at it from the standpoint of weapons systems development and doctrine testing - which would otherwise be impossible we not just can, but in that it would represent a large future expense, it's absurd to walk away from.

Then there's pulling the teeth of the Russian tiger. As someone who grew up through the Cold War, putting an actual end to their capabilities is a huge win - the point of the 1944 Bretton Woods Accords was to make wars in Europe less likely by getting rid of economic empires and enabling global any-to-many trade. We've spent an absurd amount on this project since then (IMO including hollowing out our own industrial sector, making our consumers available to all 'MFNs'). All that as a *bribe* to stay out of the Sov sphere. The aid to Ukraine is pretty much rounding error compared to that. One of the salient points of Bretton Woods was inviolability of sovereign borders; aid to Ukraine is clearly part of that.

Then there's the moral dimension. I see it as the right thing to do. I'd liken it to a woman with an abusive partner. We're not stepping between them, risking getting stabbed - but we *are* calling 911, helping her as best we can w/o getting stabbed.

I haven't looked at this in terms of finite vs infinite but I should have. I'm adding Sinek's book to my read list. That said, I'd argue that we *do* have an exit strategy: Russian forces thrust outside of pre-2014 Ukranian borders, Ukraine part of NATO. I'd hope our involvement would continue, but other than militarily.

And if we can get all this done without putting our kids at risk...(!) And very much unlike the Rus, we have a tradition of spending treasure to avoid spending blood.