If you haven’t read the book National Security and Double Government by Michael J. Glennon, you owe it to yourself to do so so. This is Glennon’s thesis — that the national-security establishment is the part of the federal government that is wielding and exercising the ultimate power within the governmental structure. At the same time, however, it permits the legislative, judicial, and executive parts of the government to continue appearing to be in charge.Glennon is not some crackpot writer. He is professor of international law at the Fletcher School at Tufts University. He has served as a consultant to various congressional committees, the U.S. State Department, and the International Atomic Energy Agency. You can read a more complete biography here.If Glennon is right — I am firmly believe that he is — then it requires people, including libertarians, to reevaluate everything they understand about the country, especially foreign affairs.