section_path: Qassam Brigades (military wing)
section_name: Qassam Brigades (military wing)
paragraph_text: Qassam Brigades (military wing)
  
  The Izz ad-Din al-Qassam Brigades is Hamas' military wing. While the number of members is known only to the Brigades leadership, Israel estimates the Brigades have a core of several hundred members who receive military style training, including training in Iran and in Syria (before the Syrian Civil War). Additionally, the brigades have an estimated 10,000–17,000 operatives, other sources say 15,000–40,000 militants, forming a backup force whenever circumstances call for reinforcements for the Brigade. Recruitment training lasts for two years. The group's ideology outlines its aim as the liberation of Palestine and the restoration of Palestinian rights under the dispensations set forth in the Qur'an, and this translates into three policy priorities:
  
  To evoke the spirit of Jihad (Resistance) among Palestinians, Arabs, and Muslims; to defend Palestinians and their land against the Zionist occupation and its manifestations; to liberate Palestinians and their land that was usurped by the Zionist occupation forces and settlers.
  
  According to its official stipulations, the Izz ad-Din al-Qassam Brigades' military operations are to be restricted to operating only inside Palestine, engaging with Israeli soldiers, and in exercising the right of self-defense against armed settlers. They are to avoid civilian targets, to respect the enemy's humanity by refraining from mutilation, defacement or excessive killing, and to avoid targeting Westerners either in the occupied zones or beyond.
  
  Down to 2007, the Brigades are estimated to have lost some 800 operatives in conflicts with Israeli forces. The leadership has been consistently undermined by targeted assassinations. Aside from Yahya Ayyash (5 January 1996), it has lost Emad Akel (24 November 1993), Salah Shehade (23 July 2002), Ibrahim al-Makadmeh (8 March 2003), Ismail Abu Shanab (21 August 2003), Ahmed Yassin (22 March 2004), and Abdel Aziz al-Rantisi (17 April 2004).
  
  The Izz ad-Din al-Qassam Brigades groups its fighters in 4–5 man cells, which in turn are integrated into companies and battalions. Unlike the political section, which is split between an internal and external structure, the Brigades are under a local Palestinian leadership, and disobedience with the decisions taken by the political leadership have been relatively rare.
  
  Although the Izz al-Din al-Qassam Brigades are an integral part of Hamas, the exact nature of the relationship is hotly debated. They appear to operate at times independently of Hamas, exercising a certain autonomy. Some cells have independent links with the external leadership, enabling them to bypass the hierarchical command chain and political leadership in Gaza. Ilana Kass and Bard O'Neill, likening Hamas's relationship with the Brigades to the political party Sinn Féin 's relationship to the military arm of the Irish Republican Army, quote a senior Hamas official as stating: "The Izz al-Din al-Qassam Brigade is a separate armed military wing, which has its own leaders who do not take their orders from Hamas and do not tell us of their plans in advance."