He wants to end the Russia-Ukraine war to avoid continuing to invest money in Ukraine, to withdraw from Ukraine, and to force Ukraine to sign resource agreements in order to recoup the money already spent. By not providing security guarantees, he aims to avoid further involvement in European affairs. He wants Canada, Greenland, and the Panama Canal to control North America. Trump aims to create a North American defense circle, shrinking American power to North America, while Asia and Europe can do as they please with their conflicts. After all, the United States rose gradually amidst the wars in Asia and Europe in the past. This is one of my speculations.