He used cleverly used alliances, showing off his political skill, to undermine the enemy. During the Third and Fourth Coalitions (1803-7) Napoleon used military or diplomatic pressure to bring Austria, Prussia and Russia under his direct influence. Each in turn temporarily became his ally, thereby weakening the potency of any coalitions. Remained a master of Europe because the coalition were unable to overcome their mutual suspicions and jealousy so they were easily tempted away from their coalitions by offers of territory