But all these things are all antithetical to Trump’s foreign policy vision. He is pursuing the abandonment of this long-standing foreign policy stance and the abdication of America’s leadership role of the international system. Trump’s WorldviewIn contrast to the post-war project, Trump’s world vision is a zero-sum game that sees trade, wealth, and security as commodities to be hoarded and not shared. For Vance and his allies, support for right-wing parties that oppose immigration and want to limit the power and influence of the EU is central to the Adminstration’s foreign policy. Trump’s foreign policy poses considerable challenges for those who want to protect a world order that was built by a very different US decades ago.