Leaders of France, Germany, Spain and Italy have called for a European Union which allows groups of member states to advance at their own pace, in a joint effort to cushion the impact of the Brexit. French president François Hollande hosted his counterparts on Monday evening in Versailles, near Paris, to prepare for a larger EU meeting later this week. “Europe must be able to draw the consequences of the Brexit,” he said in a joint statement with the other leaders of the European Union’s major economies. […] Spanish Prime Minister Mariano Rajoy and Italian Prime Minister Paolo Gentiloni joined...