The Popular Front for the Liberation of Palestine (PFLP) (Arabic: الجبهة الشعبية لتحرير فلسطين, al-Jabhah al-Sha`biyyah li-Tahrīr Filastīn) is a Marxist-Leninist, secular, nationalist Palestinian political an military organization, founded in 1967. It has consistently been the second-largest of the groups forming the Palestine Liberation Organization (the largest being Fatah). It has generally taken a hard line on Palestinian national aspirations, opposing the more moderate stance of Fatah. It opposed the Oslo Accords and was for a long time opposed to the idea of a two-state solution to the Israeli-Palestinian conflict, but in 1999 came to an agreement with the PLO leadership regarding negotiations with Israel. It has been designated as a terrorist organization by the United States, the European Union,Canada, and Israel. The military wing of the PFLP is called the Abu Ali Mustapha Brigades.