Over the last week, the idea of a “deep state” in the United States has become a hot concept in American politics. The idea is not new, but a combination of leaks about President Trump and speculation that bureaucrats might try to slow-walk or undermine his agenda have given it fresh currency. A story in Friday’s New York Times, for example, reports, “As Leaks Multiply, Fears of a ‘Deep State’ in America.”It’s an idea that I touched on in discussing the leaks. While there are various examples of activity that has been labeled as originating from a “deep state,” from Latin America to Egypt, the most prominent example is Turkey, where state institutions contain a core of diehard adherents to the secular nationalism of Mustafa Kemal Ataturk, which is increasingly being eroded by the government of Recep Tayyip Erdogan. Turkey has seen a series of coups, stretching back to 1960, as well as other activity attributed to a deep state.