Talking to the Enemy: How states without ‘diplomatic relations’ communicate

‘This is an elegant little monograph on what Churchill once called ‘black-market diplomacy, that is, communication between states that, for one reason or another, for example, war, strained relations or non-recognition, lack the normal methods of diplomatic converse… This is illuminating work in an uncultivated field’, Percy Cradock, Prime Minister’s Foreign Policy Adviser, 1984-92, International Relations.