The Ben Bella hijacking backfired, stiffening Arab resolve against France. [causal]
On hearing the news, European Algiers erupted in unprecedented delight, while at least one French radio commentator declared: “At last France has dared!” Undoubtedly, the hijacking of Ben Bella and his companions in flagrant breach of international law was a brilliant intelligence coup; but, as so often with such coups, it was to rebound badly on the originators. … Mollet, according to Mendès-France who saw him that day, was in a cold fury when he heard the news. Why, then, did he not disavow the action and release the Algerians? Because, says Mollet, “I could not liberate men who were condemned under common law; my government would have fallen overnight.” … The international Press was overwhelmingly hostile to what was regarded as a flagrant breach of international law. The French ambassador in Tunis, Pierre de Leusse, and Mollet’s Secretary for Moroccan and Tunisian Affairs, Alain Savary, both resigned in protest. At Meknès in Morocco forty-nine French civilians were butchered in fierce anti-French riots. The King, mortified by what he took as a personal affront, and Bourguiba, who had had triumphal arches erected in honour of the Tunis “summit”, henceforth stiffened their resolve to back the Algerian war effort to the utmost.
Horne, Alistair, A Savage War of Peace- Alge…, loc. 487