For forty years during the Cold War, Canada garrisoned troops and tanks near the Iron Curtain. In the late 1960s, Pierre Trudeau announced plans to remove these tanks and focus on home defence, but allies resisted this decision. After six years of overt and subtle pressures, Trudeau was at last convinced that Canadian tanks in Europe were necessary to support foreign policy objectives, and the Leopard tanks, purchased in 1976, symbolized an increased Canadian commitment to NATO. Drawing on interviews and records from Canada, NATO, the US, and Germany, The Price of Alliance tells the story of the purchase, balancing high politics with military requirements in the first major reappraisal of Trudeau’s defence policy. Frank Maas illuminates the problem of defence policymaking in a multi-country alliance as well as the opportunities and difficulties of defence procurement. At the same time, he challenges the relevance of NATO to Canada – and the influence that Canada wields within it.