1. We spend a smaller portion of our GDP on defense than before. Military spending as a percentage of GDP is down over the past few decades. 2. The cost of the

1. We spend a smaller portion of our GDP on defense than before. Military spending as a percentage of GDP is down over the past few decades. 2. The cost of the War in Afghanistan was an important factor in the American publics' changing attitude towards it. Once Trump got elected saying the war was a disaster and we should have never gone there, and we spent trillions on it and got nothing in exchange, the war effort was on borrowed time. And he said that, and was applauded, because American citizens, who still have power in a democracy, don't love spending trillions on a war against an enemy they can't eliminate (partly because they spend far less than us). Those same American citizens roundly rejected the, at the time, leading Republican candidate Jeb Bush, who was most known for his relation to the leader who started that war. Here's a source: https://www.politifact.com/factchecks/2018/may/01/donald-trump/donald-trump-and-7-trillion-dollar-cost-war/ https://www.politifact.com/factchecks/2018/may/01/donald-tru... 3. Ukraine won't give up because they are being invaded, similarly as Hamas does not give up as they are being invaded. Of course any amount of money is worth one's homeland. But the willingness of the US to continue supporting Ukraine is based on money because, again, American constituents don't like spending billions on other countries even if the cause is just.