Klemens von Klemperer's scholarly and detailed study uncovers the beliefs and activities of numerous individuals who fought against Nazism within Germany, and traces their many efforts to forge alliances with Hitler's opponents outside the Third Reich.

Measured by conventional standards of diplomacy, the foreign ventures of the German Resistance ended in failure. The Allied agencies, notably the British Foreign Office and the US State Department, were ill prepared to deal with the unorthodox approaches of the Widerstand. Ultimately, the Allies' policy of 'absolute silence', the Grand Alliance with the Soviet Union, and the demand for 'unconditional surrender' pushed the war to its final denouement, disregarding the German Resistance.

However, Professor von Klemperer shows that many of the principles and strategies of the Widerstand had distinct moral and historical consequences when considered in their context. This context includes changes in the nature of international diplomacy which became evident in the resisters' contacts with the churches, the international intelligence community, and the Resistance movements outside Germany.

All of these turned out to be attuned to the ultimate concerns of the German Resistance: overcoming the nation-state, the movement towards a more united Europe, and human rights. The foreign policy of the German Resistance thus helped prepare the agenda for international relations in the post-war world