While the neutron bomb was never deployed thanks to the efforts of activists around the world, their fears were soon redirected toward the threat of intermediate-range missiles being housed on U.S. military bases throughout Europe. In 1976, the Soviet Union introduced the SS-20 Saber, a highly mobile nuclear missile capable of hitting any target in Western Europe from within the U.S.S.R. At the time, NATO had no comparable weapon, and therefore would need to rely on the United States for support in any conflict. In December 1979, the NATO Double-Track Decision was adopted, favoring negotiation between conflicting powers but allowing the United States to place weapons comparable to the SS-20 Saber as a backup line of defense. This British poster protests that decision.