Analysts questions the size of Ukraine's natural resources deposits, how accessible they are and easy to extract, and the ultimate value of a potential deal.

Trump’s meeting with Zelensky comes as Washington and Kyiv hammer out a mineral deal, with war aid on the line. But the value of Ukraine’s minerals remains murky.

Ukraine has agreed to the terms of a deal that would allow the U.S. access to the country's rare earth and critical minerals reserves.