israel and ukraine as well. it's no coincidence that right next to a powerful country (or, in israel's case, a bloc of countries) that the US is unfriendly with there is a client state whose entire existence depends on Western funding.
The bulk of the US economy is based on taking money from working people and then consolidating it to billionaires that run defense corporations. So "paying for" it's basically just an engine for making rich Americans more rich.
Yemen: US funded, Saudi Led Anti-Houthi Rebels in Yemen.The Saudis fighting with Hezbollah. Wait I think we did sell weapons to the Saudis lol. The conflicts in and around Turkey. Congress has [blocked arms deals to Turkey](blocked arms deals to Turkey), but Biden has tried to make it happen. We are arming Ukraine, but not arming other countries in the former Soviet bloc that would probably enjoy more independence from Russia right now. We're not arming Africa which aims to stop piracy, stop foreign boats from dragnetting their shores, and has some internal conflicts with governments and insurgents. We aren't arming Mexico to stop the drug cartels. (Although US citizens frequently arm the cartels).
Yeah you can pretty much look up "US sends weapons to X" and get a positive result that we have indeed. We are also actively stopping Syria, Iran, Turkey, and Russia from arming more rebels whenever we can. US siezes Iranian Ammo, Sends to Ukraine.