The following is an excerpt from an op-ed by Sebastian von Einsiedel and Cale Salih published in Newsweek Europe.
Donald Trump and Antonio Guterres will assume their respective posts as U.S. President and U.N. Secretary-General next month. The imperious American businessman and the polished Portuguese diplomat will oversee a new and potentially confrontational era in U.S.-U.N. relations—one that could carry high costs for the United Nations. While much remains difficult to predict, the views of Trump and his advisers—combined with Republican majorities in both houses of Congress—indicate that Washington is poised to adopt a more negative approach toward the international body than it has in recent years.