By Rameen Siddiqui* – Modern Diplomacy A lifetime after its founding, the United Nations remains a monument to idealism. But monuments, too, can crumble. The 80th session of the United Nations General Assembly commenced this week not with a triumphant fanfare, but with a quiet, procedural hum: a fitting prelude to an institution struggling with its own identity. With UN leadership commemorating eight decades of multilateralism with a gathering on “the path ahead for a more inclusive and r...