, Il n'est donc pas étonnant que, dans le premier cas, il ait été difficile de voir un ou plusieurs entrepreneurs politiques faire émerger un consensus. La nature même de la crise-un désaccord entre acteurs de la construction européenne-ne facilite pas une telle évolution. Lorsque l'origine de la crise est externe, l'émergence d'un consensus sous l'égide d'un entrepreneur politique n'est pas assurée, externes, tandis que la crise du PSC et celle de la chaise vide sont avant tout des crises internes

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