Here's one: https://ipmnewsroom.org/trump-administration-makes-cancellat...
And how many it used to prevent for comparatively little cost:
https://oig.usaid.gov/sites/default/files/2024-12/0-000-25-0...
Foreign aid with no strings attached or ulterior motives could be a good thing, but it mostly doesn't exist. That's tens of billions of dollars you could be spending on your own infrastructure, education, welfare, and so forth. The powers that be want something in return for that money, and that something isn't just a warm fuzzy feeling from doing right.
I don't see that money being reallocated domestically to infrastructure, education, or welfare. The opposite in fact.
Also, what you're arguing seems paradoxical? Either these programs are selfishly serving the interests of the US, and the US is benefiting, or they are of no benefit to the US and are useless.
This is all setting aside the manner in which these funding cessations happened, what the other "many reasons" were exactly, and why those reasons were important to the one person responsible for those cessations (to the extent we can even explain what actually happened). The question of how is probably as important as why.
This motivated the propaganda to drive civil instability which was eventually exploited into a successful coup. [1] We then replaced their democracy with a pro-western puppet monarchy. This obviously was not especially well liked by the citizenry. And then in 1979 they had their own real coup, revolution, or whatever you want to call it against our puppet. [2] And this is when the hardline Islamist government took control who not only had a strong dislike of the West, but also this paranoia that we were always conspiring against them.
If we simply treated them as a sovereign nation instead of a plaything to be exploited, there's basically no chance Iran would be this Islamic extremist sect today. They may well even have ended up having positive relations with the US. And this isn't an exception, but a constantly recurring theme. Al Qaeda came about from our backing Islamic extremists in Afghanistan to try to get one off on the USSR.
And now after years we finally successfully overthrew Assad to replace a secular dictator with a worldwide wanted terrorist with a $10 million bounty on his head, who we're now framing as a moderate extremist or whatever - even as he is genuinely actively carrying out acts far more egregious than even the most outrageous of our allegations against Assad. How do you think that relation's going to turn out over the next 20 years? It doesn't take a prophet to know the answer there.
It's all extremely myopic and destructive not only on a global level, but even a purely self interested one.
[1] - https://en.wikipedia.org/wiki/1953_Iranian_coup_d'%C3%A9tat
So this would be like disbanding Ford because VW was cheating on their diesel emissions.
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Look, making the government more efficient is a good idea. That's not what's being done. The government is being shrunk so it's not capable of doing thinks like ensuring people like Musk/Bezos actually pay the appropriate tax rate. Or ensuring that factories don't enmass dump their toxic waste into drinking water.
The cover story is efficiency; the easy way to tell this is the GSA itself has proposed (prior to Trump) ways to save over 55 billion and DOGE isn't doing them.
[1] - https://foreignpolicy.com/2014/04/03/cuban-twitter-and-other... (archive: https://archive.is/IQl36)