I hate politics and economy; I wish politics meant jackshit, which they should. Honestly, the US currently has the power to tell any country in the world that they want everything they have, and get away with it, but instead, they're worried what other people think. The only way we'd stand any chance of losing, is if every country attacked simultaneously, and unexpectedly; with our air and naval power, we can control an entire continent with only a few units, but we're afraid that other countries will cry if North Korea gets put in it's place.
What should've been done, is when North Korea said that they would launch missiles, and we said no, we should've blockaded their country with carriers and battleships, and not let them have any resources, and starve them out under siege, and gave up their missile, then they could go free. If they launched it, we should've demonstrated our power to them by doing something like annihilating a city/port with something sub-par, and tell them, "This is not even a portion of our power, don't fuck with us. Stand down, or we will use all of it." If they didn't step down, too bad, but I'm pretty sure that they would've stepped down, because not even a power hungry leader would like to see the only thing that means anything to them obliterated in minutes in front of their very eyes.