Any international system must have two key elements for it to work. One, it has to have a certain equilibrium of power that makes overthrowing the system difficult and costly. Secondly, it has to have a sense of legitimacy.
Henry A. KissingerWhen you travel as secretary, one problem you have is that the press comes with you and wants an immediate result because it justifies their trip. And sometimes the best result is that you don't try to get a result but try to get an understanding for the next time you go to them.
Henry A. Kissinger