As the United Nations turns 80, it faces a legitimacy crisis fueled by budget cuts, global crises, and a United States President that is antagonistic toward the institution. This week's UNGA highlights the stakes: What is the future US role on the global stage? Can the UN still deliver in a fractured world? Will a woman be the next UN Secretary General? Longtime UN insiders Corinne Momal-Vanian and Richard Gowan discuss.