JMdict entry #1284840

1. noun (common) (futsuumeishi) yojijukugo alliance (of the Six Kingdoms against the Qin dynasty, and of individual Kingdoms with the Qin dynasty)
   see: 合従, 連衡
2. noun (common) (futsuumeishi) yojijukugo (tactic of) making and breaking alliances (to benefit oneself as the occasion demands); resorting to alliances as a diplomatic expedient