Nicholas Mulder’s new book, “The Economic Weapon: The Rise of Sanctions as a Tool of Modern War,” remakes debates over European history between the two world wars. It rescues the League of Nations from the enormous condescension of posterity, arguing that the league was neither ridiculous nor doomed. However, it also demonstrates that the league’s ...

Bitcoin, the decentralised, mainly digital currency that is neither issued nor guaranteed by central banks, has always seemed like a magic trick. Rather than spinning straw into gold it transforms wasted computing power into money that people will actually accept as payment. Radical libertarians have desperately wanted to believe in it because they hope it ...