How does Trump's approach to resolving the Ukraine conflict differ from past U.S. withdrawal situations?

Unlike Vietnam and Afghanistan where the U.S. completely withdrew without maintaining presence, Trump is proposing continued American involvement in Ukraine after fighting stops. He's already discussing economic development with Zelensky, particularly focusing on helping Ukraine develop its rare earth minerals and natural resources. This approach would maintain an American presence in Ukraine, which would likely deter future Russian aggression, as Russia would be hesitant to invade areas where Americans are conducting economic activities on the ground. This strategy creates a more sustainable post-conflict situation while protecting Ukraine from further invasion.