What exact clauses of any treaty were the Egyptians violating? Nationalization did not effect any of the treaties as the concession still rested with the same entity and compensation was to be paid. s a state of War existed it's pretty arguable the Egypt was within it's rights to restrict Israeli use of it's canal and territorial waters,
Whatever violations may have been committed by Egypt the secret plotting by Israel, France and Britain to unleash a surprise war of aggression is much much more serious action.
https://en.wikipedia.org/wiki/Palestini ... 48_to_1956"Between 1948 and 1955, infiltration by Palestinians into Israel was opposed by Arab governments"
"After an Israeli raid on an Egyptian military outpost in Gaza in February 1955, during which 37 Egyptian soldiers were killed, the Egyptian government began to actively sponsor fedayeen raids into Israel."
"In 1953, Israeli Prime Minister David Ben-Gurion taskedAriel Sharon, then security chief of the Northern Region, with setting up of a new commando unit, Unit 101, designed to respond to fedayeen infiltrations (see retribution operations).[19] After one month of training, "a patrol of the unit that infiltrated into the Gaza Strip as an exercise, encountered [Palestinians] in al-Bureij refugee camp, opened fire to rescue itself and left behind about 30 killed Arabs and dozens of wounded."
"United Nations reports indicate that between 1949 and 1956, Israel launched more than 17 raids on Egyptian territory and 31 attacks on Arab towns or military forces"
"In 1956, Israeli troops entered Khan Yunis in the Egyptian controlled Gaza Strip, conducting house-to-house searches for Palestinian fedayeen and weaponry.[34] During this operation, 275 Palestinians were killed, with an additional 111 killed in Israeli raids on the Rafah refugee camp.[34][35] Israel claimed these killings resulted from "refugee resistance", a claim denied by refugees;[35] there were no Israeli casualties"
Israel has often targeted civilians.
https://en.wikipedia.org/wiki/1952_Beit_Jala_Raidhttps://en.wikipedia.org/wiki/Lavon_Affairhttps://en.wikipedia.org/wiki/Qibya_massacre//en.wikipedia.org/wiki/Kafr_Qasim_massacre