Illia Ponomarenko: Essentially, the "rare earths agreement" is just a memorandum on how the U.S. and Ukraine are intended to invest in Ukraine's mining industry and mineral resources and jointly get profits at some point.
There's 0% certainty on whether this will ever be a real big thing.
The document doesn't even require parliamentary ratification at this moment.
Now, Donald Trump will declare a grandiose victory as soon as Zelensky signs this in front of cameras in D.C., and essentially, that's it.
Source.