Has America had enough of war? On a Tuesday evening in March, veterans of America’s war in Afghanistan are sitting at an outdoor patio bar in Washington, DC. The presence on the menu of steak tartare, lobster ceviche and truffled chips is the only clue that this is a rarefied hotel in Georgetown, one of the capital’s most expensive neighbourhoods. The atmosphere otherwise is a fug of “fucks” and spent hopes. One of the vets says he was shot in the hamstring (“the ass”, his friends correct him with glee). Another lost his leg to an improvised explosive device in Kandahar in 2012. ...