“Russia needs Ukraine’s natural resources to build nuclear submarines stronger than the free world’s submarines.”
Russia has more natural resources than any other country on the planet. Ukraine has nothing they want other than to cross their country with a pipeline and keep NATO missiles from being stationed there.
Uranium, coal, and TITANIUM, Ukraine has the largest percentages than any other European ore producers...
https://www.worldatlas.com/articles/what-are-the-major-natural-resources-of-ukraine.html