MILITANT AND TERRORIST GROUPS INVOLVED IN THE OCTOBER 7 ATTACK ON ISRAEL

1. Hamas: While Hamas took the lead in launching the initial assault, there is evidence that numerous other militant and terrorist groups worked in concert with Hamas, which continues to shape the trajectory of the ongoing conflict.
2. Izz al-Din al-Qassam Brigades: Izz al-Din al-Qassam Brigades is the militant wing of the terrorist organization Hamas. It has been designated as a terrorist organization by several countries, including the United States, Israel, and the European Union. 
3. Palestinian Islamic Jihad :Palestinian Islamic Jihad (PIJ) is a Palestinian terrorist organization that is designated by several countries, including the United States, Israel, and the European Union. It was founded in the late 1970s with the goal of establishing an Islamic Palestinian state and has carried out attacks against Israel.
4. Al-Aqsa Martyrs Brigade: The Al-Aqsa Martyrs Brigade is a Palestinian militant organization affiliated with Fatah, a major Palestinian political party, that has carried out attacks and other activities against Israel. One of the key players in Palestinian politics today, Al-Aqsa Martyrs brigade was founded in the late 1950s and has historically been associated with the Palestine Liberation Organization (PLO). The group was designated a Foreign Terrorist Organization by the US Department of State in 2002.
5. Democratic Front for the Liberation of Palestine : The Democratic Front for the Liberation of Palestine (DFLP) is a Palestinian political and militant organization founded in 1969, known for its left-wing and Marxist ideologies. It has historically aimed for the liberation of Palestine and the establishment of an independent Palestinian state through both militaristic and political means. While a member of the Palestine Liberation Organization (PLO), it has not been as prominent as other Palestinian factions like Fatah or Hamas in recent years.
6. Palestinian Mujahideen Movement : The Palestinian Mujahideen Movement is a Palestinian militant organization that emerged in the early 1970s with the goal of resisting Israeli occupation and achieving Palestinian self-determination through various armed activities and operations against Israeli forces. However, it is not as widely recognized or prominent as Palestinian terrorist groups like Hamas or the Palestinian Islamic Jihad (PIJ).
7. Popular Resistance Committees:The Popular Resistance Committees (PRC), whose military wing is referred to as Al-Nasser Salah al-Deen Brigades, are a coalition of various Palestinian factions and armed groups in the Gaza Strip. They were formed in the early 2000s during the Second Intifada, a period of intense Palestinian-Israeli conflict. The PRC includes members from different political and militant backgrounds and has carried out attacks against Israel. While not as prominent as terrorist organizations like Hamas or the Palestinian Islamic Jihad (PIJ), the PRC has played a role in the ongoing Israeli-Palestinian conflict, as evidenced by the events of October 7, 2023.

Those who could join the fight

1. Lebanese Hezbollah: Though not directly involved in the October 7 attacks, Lebanese Hezbollah and Israel have exchanged assaults in connection with the ongoing Israel-Hamas War since October 8. Also known as Hezbollah, Lebanese Hezbollah is a Shiite Islamist political and militant organization based in Lebanon. It was founded in the early 1980s with support from Iran, following the Israeli invasion of Lebanon. Hezbollah’s primary goal is to resist Israel and promote Shiite interests in Lebanon and the wider region. The group was designated a Foreign Terrorist Organization by the US Department of State in 1997, the same year as Hamas and PIJ.
2. Lions’ Den: Saraya al-Quds Military spokesman Abu Hamza has called for Lions’ Den and Jenin Brigade, another Palestinian militant group, to join the fight. The Lions’ Den is a Palestinian militant group in the Israeli-occupied West Bank, formed in August 2022. Comprising members from various Palestinian militant and terrorist organizations, including Hamas and Palestinian Islamic Jihad, along with disaffected Fatah members, it resonates with some young Palestinians frustrated by the Israeli occupation, settlements, settler violence, and the perceived ineffectiveness of the Palestinian Authority. They have engaged in various West Bank attacks, funded in part by Hamas.