Sen. Lindsey Graham (R-SC) has frequently brought up Ukraine's rare earth minerals as a reason to continue fueling the proxy war.

"This war is about money. People don't talk much about it. But you know, the richest country in all of Europe for rare earth minerals is Ukraine. Two to seven trillion dollars' worth of minerals that are rare earth minerals, very relevant to the 21st century," Graham told Fox News host Sean Hannity in November. "Ukraine's ready to do a deal with us, not the Russians. So it's in our interest to make sure that Russia doesn't take over the place."