On 22 March 2004, Sheikh Ahmed Yassin, a Palestinian leader and one of the founders of Hamas, was killed in Gaza City at the age of 67. Yassin, who used a wheelchair after becoming quadriplegic in his adolescence, was targeted by Israel Defense Forces (IDF) helicopters as he was returning from performing the Fajr (dawn) prayer near his residence in the Sabra neighborhood of Gaza. Multiple missiles were fired specifically to target Yassin. His companions were killed immediately, and the attack also killed nine Palestinian bystanders and injured 15 others, including two of Yassin's sons. According to Israeli radio cited in reporting on the case, Israeli Prime Minister Ariel Sharon personally supervised the operation.
The killing occurred roughly one week after the 2004 Ashdod Port bombings and followed an earlier, unsuccessful attempt on Yassin's life on 6 September 2003. In the immediate aftermath, Hamas leadership passed to Abdel Aziz al-Rantisi, who publicly called for unity and continued resistance in Yassin's name. Al-Rantisi himself was killed in a similar Israeli operation approximately two weeks later; Hamas leadership subsequently passed to Khaled Mashal, who led the movement until 2017.
The killing produced widespread condemnation across the Palestinian territories and internationally. Palestinian Authority President Yasser Arafat and the PLO executive committee condemned the assassination and called for a three-day mourning period. Palestinian Prime Minister Ahmed Qurei described the killing as a "severe and abhorrent act" and called on the Quartet and the United States to intervene. Governments including Canada, Egypt, France, Kuwait, Lebanon, and the United Kingdom, as well as the European Union's foreign policy chief, issued statements condemning the killing, with several describing it as counterproductive to peace efforts or a violation of international law. Within Israel, Finance Minister Benjamin Netanyahu praised the operation, while Israel's UN representative said it demonstrated resolve against terrorism. International media reaction was largely critical; the Financial Times called the assassination "extremely stupid," and the generally pro-Israel Daily Telegraph termed it a "serious mistake." The Guardian reported that many Palestinians viewed the killing as "cowardly" given Yassin's disability and expressed concern it would provoke further attacks on Israel. The Sun was a notable exception, describing Yassin as a "Godfather of Terror."
The case remains categorized as a state-conducted targeted killing; no criminal charges have been brought, as it was carried out openly as a military operation.