The Greek drama took a turn few of us expected last week, when the world thought compromise was imminent. What happens after Sunday’s referendum is anyone’s guess — but recrimination is already flying, much of it aimed at IMF managing director Christine Lagarde. Having inherited the Greek headache from her predecessor Dominique Strauss-Kahn after his resignation in 2011, she has always talked tough — but now stands accused of setting aside IMF rules, as well as long-established blueprints for debt relief and the views of many of the Fund’s own economists, in order to stay aligned with the European Commission...