Here is where we’re at: The Republican establishment — the guys who told us that for a trillion dollars and several thousand American casualties, we could build “Islamic democracies” that would be reliable U.S. allies in the War on Terror — say it is Ted Cruz who is “delusional” and the effort to stave off Obamacare that is “unattainable.” These self-appointed sages are, of course, the same guys who told us the way to “stabilize” and “democratize” Libya was to help jihadists topple and kill the resident dictator — who, at the time, was a U.S. ally, providing intelligence about...