In addition, the level of isolationism in the US is frankly frightening. It's nothing like North Korea, of course, but there are a LOT of Americans who are incredibly insular. It isn't as bad as some of the numbers suggest--the very few Americans having a passport is more a testimony to the fact that you have to go farther to cross a border than you do in Europe--but it's bad. Most people in the US know effectively nothing about modern international affairs, and only a small percentage know anything about international history. During the presidential election, for example, then-candidate Obama expressing his willingness to go into Pakistan if necessary was a relatively small bit of trivia here, and most people had no freaking clue how upset his statements to that effect made pretty much everyone in Pakistan. Fast-forward a few years, and you see the consequences of that ignorance--the public's response to Pakistan's being upset with the actual raid isn't "We know how big a deal this was for you, we felt we had to do it, and we'll make it up to you," it was "if you're upset it must be because you were hiding Osama!"
Your showing your own ignorance. You need to follow Pakistan's papers more closely. The JUI-F political party had it's members standing up in Pakistan's National Assemblies demanding to know why the military failed to protect a muslim hero like Osama Bin Laden, because clearly he could not have been where he was without the ISI or military's knowledge. So, it's not just American's ignorant of Pakistani politics that believe there were officials in Pakistan that were hiding him, elected Pakistani politicians believed so as well, and they deemed him a hero!!!(Google the JUI-F if you won't believe me)
It provides an international mechanism for justice and oversight of elections and regime change when countries are ready for those things. (The International Criminal Tribunals and later the International Criminal Court, for example.) It also determines whether wars are legal or illegal under International law
Right, like the ICC convictions of Omar Al-Bashir and Gadhafi. How is that working out so far?
Justifying wars like they authorized action in Libya?
The UN is petty political maneuvering, just on a grand scale and with callous disregard for the lives of people.