Each autumn, New York City yields a portion of itself to the world — its streets narrowed, its rhythms altered, its police force stretched across a geography of diplomacy and risk. This year, as the United Nations General Assembly convenes with President Trump and Prime Minister Netanyahu among its attendees, the NYPD undertakes a security operation shaped not only by logistics but by the fractured geopolitical moment those leaders embody. The city that never sleeps will, for a week, keep a different kind of watch.