McCain wants to "kill" the UN?

Krauthammer: McCain Has ‘Hidden Agenda’ To ‘Kill The United Nations’
(Think Progress)
---
Does the president even have the authority to do such a thing? I know that it is housed on our soil, but it's not like we are the only country involved...
What a bizarre thing to want to do - i really don't understand people's hatred for a group concerned with communication between countries.