Isolationism, national policy of avoiding political or economic entanglements with other countries… Isolationism was a common charge leveled at paleoconservatives who rose in response to the statism and internationalism of the neoconservative movement, which dominated the political scene during the presidencies of Ronald Reagan, George H.W. Bush, and George W. Bush. - Encyclopedia Brittannica

One can withdraw from foreign diplomatic and economic agreements, such as Trump’s first day executive order that withdrew the US from and made China the leader in the the Trans Pasific Parthership, while also favoring assignations. Indeed, using assignation and small, frequent unilateral military action to presue foreign policy Instead of multinational, diplomatic, or economic means is foundational to isolationist foreign power.