It used to be that the US was occasionally stymied from doing good by the USSR - China UN Security council veto.
Nowadays, the US is occasionally prevented from doing evil and starting WWIII by the Russia - China UN Security council veto.
The UN has always been authoritarian socialist elite rule, but occasionally they can be tricked into doing something not so bad.
True... a buffer against Obama mischief. Who woulda thunk it.