There are many, among whom I count myself, who are still trying to make sense of Brexit. Why would the citizens of Great Britain vote to exit the European Union. I'm not a Brit so there is much about the situation that I lack knowledge. My sense is that this is a complicated issue, and there different rationales embraced by different folk. Martin Marty takes a look at Brexit and other similar expressions of what might best be termed tribalism. The EU, like the UN, emerged out of a world gone mad. Two world wars had convulsed Europe and had drawn in much of the rest of the world, bringing death and destruction to millions. Maybe cooperation would be a better option, but at least for some, if not many, cooperation isn't welcome. In any case, Marty offers us some food for thought.