U.S. to control nuclear policies

As many of you are aware, the United States has been pushing North Korea to give up their research and developement of nuclear power and a strong running missile program. Let me point out two things right away.
First, the United States is, for the majority, powered by nuclear power. Secondly, the United States has been THE only world power, or anyone for that matter, to use a nuclear power during conflict on both military and civilian targets. Now, the lines of right and wrong in the situation, aren’t the concern at the moment, but those facts need to be stated before I go on.
In recent diplomatic sessions with North Korea, the United States has demanded things of North Korea, that on certain grounds, would be considered ridiculous to be demanded of the United States of America. These demands include the halting of the missile program, and the deconstruction of re-opened nuclear facilities. The grey area of this “conflict”, as the media puts it, is that the purpose of the facilties, can have many facits, one of them being, harmful to the world. Take a moment, now think of all the nuclear weapons aboard U.S. warships, submarines, aircraft, and land based silos. Now, back to North Korea. As nuclear energy is produced, the by-products of the process can be used in both nuclear weapons and “dirty” bombs. Dirty bombs are a simple explosives that scatter radioactive material over a massive area, causing damage that will stay, just as the after effect’s of a nuclear attack are. Dirty bombs are, by U.S. intelligence, believed to be a choice weapon of terrorists. North Korea is not known for any involvement with terrorist activity, atleast not threatening against the U.S. or nothing proven thus far. But due to North Korea’s “financial situation”, U.S. intelligence, doesn’t rule out the possibility of connections with active terrorists.
What does what I just stated have to do with America’s “duty” to keep peace in the free world. Nothing, because no one in proper power, know’s the plans of North Korea, nor does anyone know America’s full extent of action they are willing to take. My point is more simplistic I guess. With power, comes responsability, thrust upon you or not, and with power, always, comes a degree of lust…for something. Is there anything you can do, as a civilian with limited power, to stop whatever is being mounted in the hostility of demands flung by both the countries mentioned. I belief not, but that’s also because my faith in the mass taking action, is very limited, on anything. I only hope that as you read this and assume you know how foolish the leaders are, or are goin to get, in this conflict that engulfs the world, that you merily apply it to your own morals structure and thought process. Whether it be applicable in your career, as a businessman, father, son, daughter, mother, and any position in life, that needs more than just a person.