it's what the idf did after crossing the border that makes it a genocide
Feel free to link an objective, unbiased source showing that the IDF has engaged in the killing of members of a national, ethnical, racial or religious group; causing serious bodily or mental harm to members of the group; deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part; imposing measures intended to prevent births within the group; or forcibly transferring children of the group to another group — and, that the respective act was committed with intent to destroy, in whole or in part, the group.
That is, after all, the definition of genocide.
running across the border of a country to slaughter thousands of women and children on account of their nationality does