Gaitskell's position became more cautious during the summer, and he suggested the dispute with Egypt should be referred to the United Nations. His first speech on Suez (2 August 1956) attacked Nasser and was welcomed by many Conservatives, and implied that he would support the use of force, but in Brivati's view did not give enough emphasis to his stipulation that it be done through the United Nations. He had believed Eden's assurances that he had no intention of using force. In two letters to Eden sent on 3 and 10 August Gaitskell condemned Nasser, but warned that he would not support any action that violated the United Nations charter. In his letter of 10 August, Gaitskell wrote: "Lest there should be any doubt in your mind about my personal attitude, let me say that I could not regard an armed attack on Egypt by ourselves and the French as justified by anything which Nasser has done so far or as consistent with the Charter of the United Nations. Nor, in my opinion, would such an attack be justified in order to impose a system of international control over the canal – desirable though this is. If, of course, the whole matter were to be taken to the United Nations and if Egypt were to be condemned by them as aggressors, then, of course, the position would be different. And if further action which amounted to obvious aggression by Egypt were taken by Nasser, then again it would be different. So far what Nasser has done amounts to a threat, a grave threat to us and to others, which certainly cannot be ignored; but it is only a threat, not in my opinion justifying retaliation by war."