Sometimes, there are hinge-points in human history – moments when we have to choose between an exuberant descent into lunacy, and a still, sober voice offering us a sane way out. Usually, we can only see them when we look back from a distance. In 1793, the great democrat Thomas Paine said the French Revolution shouldn't betray its principles by killing the King, because it would trigger an orgy of blood-letting that would eventually drown them all. They threw him in jail. In 1919, the great economist John Maynard Keynes said the European powers shouldn't humiliate Germany, because it would catalyse extreme nationalism and produce another world war. They ignored him. In 1953, a handful of US President Dwight Eisenhower's advisers urged him not to destroy Iranian democracy and kidnap its Prime Minister, because it would have a reactionary ripple effect that lasted decades. He refused to listen.
Another of those seemingly small moments with a long echo is happening now.