In the late 1980s, the breakup of the Soviet bloc in Eastern Europe and the growing preoccupation of Soviet leaders with massive internal political and economic difficulties forced the Japanese and United States governments to reassess their longstanding alliance against the Soviet threat. Officials of both nations had tended to characterize the security alliance as the linchpin of the relationship, which should have priority over economic and other disputes. Some Japanese and United States officials and commentators continued to emphasize the common dangers to Japan- United States interests posed by the continued strong Soviet military presence in Asia. They stressed that until Moscow followed its moderation in Europe with major demobilization and reductions in its forces positioned against the United States and Japan in the Pacific, Washington and Tokyo needed to remain militarily prepared and vigilant.