El Salvador's President Nayim Bukele is something of a freak, a loose cannon. His Twitter photo should give you the idea: I can't tell if he's on the right or left. He's some kind of opportunist who's often described as a caudillo. He's an ex-communist with Venezuelan advisers, as the screen shot indicates at the top. But apparently the country's real communists don't like him. He's trashed his country's future by dropping the U.S. dollar as the country's currency and replacing it with bitcoin, an unreliable ledger currency favored by drug-dealers, money-launderers, and fast-buck speculators. He is said to be...