Can the US and Ukraine reach a minerals deal?

Ukrainian soil contains around five percent of the world's rare earth mineral deposits. To US President Donald Trump, that looks like a cash payment, in return for the billions Washington has sent to Ukraine to support its war against Russia. Trump is demanding Kyiv sign over the rights to about $500bn worth of that mineral wealth. President Zelenskyy has rejected the first draft of that deal - saying he can't quote, "sell the state". But at what point does selling the state start to look like saving the state? And how practical is it to extract resources from war-battered Ukraine?