The Popular Front for the Liberation of Palestine (PFLP; Arabic: الجبهة الشعبية لتحرير فلسطين, romanized: al-Jabha ash-Shaʿbiyya li-Taḥrīr Filasṭīn) is a Palestinian Marxist–Leninist organization1 founded in 1967 by George Habash. It has consistently been the second-largest of the groups forming the Palestine Liberation Organization (PLO), the largest being Fatah. A secular organization, the PFLP has generally taken a hard line on Palestinian national aspirations, opposing the more moderate stance of Fatah. It does not recognize Israel and promotes a one-state solution to the Israeli–Palestinian conflict. The military wing of the PFLP is called the Abu Ali Mustafa Brigades. The PFLP pioneered armed aircraft-hijackings in the late 1960s and early 1970s. More recently, the group has participated in the ongoing Gaza war alongside Hamas and other allied Palestinian factions. It has been designated a terrorist organization by the United States, Japan, Canada and the European Union. Ahmad Sa'adat, who was sentenced in 2006 to 30 years in an Israeli prison, has served as General Secretary of the PFLP since 2001. As of 2025, the PFLP has boycotted participation in both the PLO Executive Committee and the Palestinian National Council.