Chapter 11 examines the steps needed to rescue Brandt’s Ostpolitik from its near-demise at the hands of a polarized Bundestag. Following a rash of back-channel diplomacy with Egon Bahr at the center, France, Britain, the United States, and the USSR finally reached a Quadripartite Agreement on Berlin; it guaranteed access to the city but failed to clarify West Berlin’s relationship to the Federal Republic, leaving room for future disputes. Brandt’s surprise visit to Brezhnev in Crimea deepened the relationship between these two leaders, but created suspicion in the Western camp that did not ease even with Brandt’s award of the Nobel Peace Prize. Rainer Barzel, leader of the CDU/CSU, insisted that the Warsaw and Moscow treaties must be renegotiated; he maneuvered in the Bundestag to overthrow the Brandt government. Outside observers feared that the entire course of détente was in jeopardy. Barzel’s bid for power failed, but he continued to seek concessions from the Soviets; the GDR did briefly take a softer line. The treaties passed without CDU/CSU support, and Brandt went on to win a decisive victory in the 1972 elections, affirming public backing for Ostpolitik.