The Organization of Islamic Cooperation (OIC) has condemned the assassination of Ismail Haniyeh, a senior Hamas leader, during his visit to Tehran, stating that Israel is fully responsible for this act, which is deemed a crime of aggression and a violation of international law. The OIC's emergency meeting in Jeddah emphasized that the attack infringes on Iran's sovereignty and threatens regional stability. Saudi Arabia echoed this sentiment, labeling the assassination as a blatant violation of international law and emphasizing the need for the international community to hold Israel accountable. Iran's leaders have vowed retaliation, citing the assassination as a justification for a strong response against further Israeli aggression. The OIC called for immediate UN Security Council intervention to cease Israel's ongoing actions, which have led to significant humanitarian crises in Palestinian territories. The meeting highlighted the necessity for solidarity with the Palestinian people and the urgent need to address the violations occurring in Gaza and the West Bank.