<p>US President Donald Trump said on Sunday Ukrainian President Volodymyr Zelenskyy wants to back out of a critical minerals deal, warning the Ukrainian leader would face big problems if he did.</p><p>"He's trying to back out of the rare earth deal and if he does that, he’s got some problems, big, big problems," Trump told reporters.</p>.Ukraine's Zelenskyy says US is 'constantly' changing terms of minerals deal.<p>"He wants to be a member of NATO, but he's never going to be a member of NATO. He understands that." </p>
<p>US President Donald Trump said on Sunday Ukrainian President Volodymyr Zelenskyy wants to back out of a critical minerals deal, warning the Ukrainian leader would face big problems if he did.</p><p>"He's trying to back out of the rare earth deal and if he does that, he’s got some problems, big, big problems," Trump told reporters.</p>.Ukraine's Zelenskyy says US is 'constantly' changing terms of minerals deal.<p>"He wants to be a member of NATO, but he's never going to be a member of NATO. He understands that." </p>