【环时深度】美国为何反复回归“孤岛心态”？

Core Viewpoint - The article discusses the increasing isolation of the United States due to its trade policies, humanitarian aid cuts, and immigration restrictions, raising concerns about the potential decline of free trade and the U.S.'s global influence [1][8]. Group 1: U.S. Isolation and Global Impact - The U.S. is perceived as increasingly isolated, with its actions leading to a deterioration of its international image and a weakening of its dominant position in the global economy [1][3][9]. - The U.S. government's withdrawal from international organizations and its restrictive immigration policies are contributing to a decline in its attractiveness as a destination for foreign talent and investment [3][9]. - The U.S. is projected to be the only country experiencing a decline in foreign tourist spending this year, with international visitor numbers only reaching 80% of 2019 levels [4][9]. Group 2: Historical Context of U.S. Isolationism - The article traces the roots of American isolationism back to its geographical advantages and historical policies, such as Washington's farewell address and the Monroe Doctrine, which emphasized non-interference in foreign affairs [5][6]. - Public sentiment in the U.S. has historically leaned towards isolationism, especially during periods of international conflict, with significant events like World War I and II shaping this perspective [6][7]. Group 3: Shifts in Global Trade Dynamics - The U.S.'s trade wars and isolationist policies are prompting other countries to seek new partnerships, leading to tighter cooperation between Canada and Europe, and a shift in trade dynamics away from U.S. involvement [8][9]. - The article notes that since 2017, the share of global trade involving the U.S. has declined, with other regions, particularly Asia and Europe, increasing their trade shares [8][9]. Group 4: Declining U.S. Influence - The U.S. is losing its status as a key player in the global economy, with its isolationist policies undermining its previous role as a leading economic power and diminishing the dollar's status as a reserve currency [9][10]. - The article highlights that the U.S.'s complex cultural understanding and selective policy enforcement are eroding its soft power and international credibility [9][10].