UNITED NATIONS, United States: The United Nations will mark its 75th anniversary Monday, celebrating the mantra that "multilateralism is not an option but a necessity," even as the coronavirus underscores the fragility of international cooperation. The anniversary will kick off the global body's annual General Assembly, when normally the leaders and representatives of nearly 200 countries gather en masse to sound off about the world's problems and offer myriad solutions.

But this year, a part of Manhattan will not be sealed off for the "UNGA"; there will be no endless limousine convoys, and no busy beehive of diplomats, journalists and translators in the halls of the UN.