Canadian officials warned of disagreement to come between the Europeans and the Americans over the “zero option,” the longstanding proposal to reduce both US and Soviet INF to zero. This dispatch from Brussels reported “substantial unhappiness” amongst the Europeans that the United States and the Soviet Union would discuss disarmament “even if neither of them believed in it.” Nuclear deterrence had prevented war in Europe for the preceding four decades, and US-Soviet discussions of disarmament only made it even more difficult to convince public opinion of deterrence’s continued importance