Article 51 –“Nothing in the present Charter shall impair the inherent right of individual or collective self-defense if an armed attack occurs against a Member of the United Nations“
Just in case you did not know, Hams is not a Member State of the United Nations
Just in case you did not know, it is Hamas who initiated this current situation by massacring 1500 non-combatants in Israel–men, women, children, and babies. So it is Israel that has the right call upon Article 51 of the UN Charter