حركة الجهاد الإسلامي في فلسطين
The Gaza Strip's security is mainly handled by Hamas through its military wing, the [[Izz ad-Din al-Qassam Brigades]], internal security service, and civil police force. The Izz ad-Din al-Qassam Brigades have an estimated 30,000 to 50,000 operatives. However, other Palestinian militant factions operate in the Gaza Strip alongside, and sometimes opposed to Hamas. The [[Islamic Jihad Movement in Palestine]], also known as the Palestinian Islamic Jihad (PIJ) is the second largest militant faction operating in the Gaza Strip. Its military wing, the [[Al-Quds Brigades]], has an estimated 8,000 fighters. In June 2013, the Islamic Jihad broke ties with Hamas leaders after Hamas police fatally shot the commander of Islamic Jihad's military wing. The third largest faction is the [[Popular Resistance Committees]]. Its military wing is known as the [[Al-Nasser Salah al-Deen Brigades]].