It’s the most repeated maxim in all the reportage on the war in Afghanistan: “The Americans have the watches, we, the Taliban, have the time.” “Play it again, Sam” was said in “Casablanca”. It should be played, said and listened to in Kabul and Washington today. This is America’s longest war ever – 18 years and counting. It has cost over one trillion dollars and taken 2,500 American lives. President Barack Obama, blind-sided by the generals, he confided later, pumped up the numbers of troops to 100,000. Before very long, Obama came to realize that even if he did a Lyndon Johnson and sent in half a million troops it would end up as it did in Vietnam with a stalemate (still unanswered is why, after 18 years, the Afghan army isn’t trained to do the job themselves). Obama then rolled back the numbers. Three years ago President Donald Trump,...