Founded in 1968, the Popular Front for the Liberation of Palestine - General Command (PFLP-GC) is an Islamist Communist group committed to the establishment of a Palestinian state and the destruction of Israel. The group is opposed to any negotiation with Israel and believes solely in a military solution to the Israeli-Palestinian conflict. It was the first Palestinian group to use suicide squads: in 1974, three members attacked Qiryat Shemona and killed 18 people before dying in a battle with Israeli soldiers. The PFLP-GC has used barometric bombs to blow up aircraft, parcel-explosives sent through the mail as well as motorized hang-gliders in a guerilla raid into Israel. During the 1990s, the PFLP-GC limited its activities to training and equipping other terrorist groups, such as Hamas and the Palestinian Islamic Jihad. In December 2015, PFLP-GC claimed responsibility for the firing of three rockets on Northern Israel in retaliation for the assassination of a Hizballah member in Syria.