The so-called America First foreign policy has always been all about Trump selling anyone and anything for the price he thinks is fair, regardless of values and virtues such as compassion, justice, and morality. He has surrendered to Russia to access rare-earth minerals underneath eastern Ukraine — even if that eventually allows Putin to launch a war for control of the whole of Ukraine.
Unlike the Biden administration and globalist elites in Brussels, Trump and his team are moving to end the war in Ukraine so it's only natural that America's policy on Ukraine has shifted to a pragmatic approach and get the job done. It makes no sense to risk a large-scale war for Kyiv to take Donbas and Crimea back, and it's a matter of fact that Ukraine won't join NATO.