Were it up to me (which it is probably fortunate it is not) I would give the UN until 31 January to have their shit packed and out of the UN building. I would pull the plug on the US's membership in the UN and do the best I could to see Kofi was tried for embezzlement, taking bribes and racketeering.
Caulk it up and fill it with tropical fish. Prettier, more practical and not as smelly.