My brother Nicholas Spyridon Kass has made foreign policy his life’s work, knowing that the world is a dangerous place and many out there hate us, and want us dead, or as their slaves. Or perhaps they dream of using us as their jesters, to kneel near their feast tables, so they can clean the grease from their fingers on our hair. Part of that work involved knowing and appreciating how American elected officials think about the world, and how they learn about the dangers for our county, how they process the information. Do they try to think independently? Or...