Ukraine has handed over all it's mineral wealth to Trump "to repay the USA for military aid". In return they get er, what was it again? Oh yes, what they were already getting under Biden. https://www.theguardian.com/us-news/2025/apr/30/us-ukraine-minerals-deal-russia
It's not as stark as that sounds...it was actually Ukraine's proposal, the minerals are still in the ground largely due to lack of investment so it's not as though they're just shipping ready cast gold bars from the bank. The other aspect is that a very large proportion of the minerals are on land currently occupied by Russia, so there is now a purely transactive reason for Trump to want to see the land recovered.