The February 28 Popular Leagues was a leftist organization formed in the early stages of El Salvador's civil war.  A peace treaty between the government and leftist rebels was finally signed in 1992 and a re-emergence of LP-28 terrorist activities does not seem likely.

Fedayeen Khalq Organization (FKO), People's Fedayeen, People's Fedayeen Guerrillas, People's Fedayeen Guerrillas Organization, People's Fedayeen Movement

In 1986, Iranian Information Minister Mohammad Ray-shahri declared that Fedayeen Khalq had been broken up, with the arrest of 60 "high-ranking" members in January. This announcement does not appear to be entirely accurate, though Fedayeen's days as a legitimate terrorist group are over. Recently, the organization has only been active in Iranian politics through its participation in the National Council of Resistance of Iran (NCRI), the main anti-Ayatollah political umbrella group in Iran, and the publication of its internet news website, Gooya News, which is censored by Iranian Intelligence.

Federation of Armenian Revolutionaries - Revolutionary Movement

The Federation of Armenian Revolutionaries  --  Revolutionary Movement was a terrorist group responsible for only one attack, the 1985 kidnapping of two Armenian Revolutionary Federation (ARF) leaders in Lebanon. In the 1986, the group claimed that they tried and executed one of the kidnapped leaders.<br /><p><br />The ARF is a Socialist political party active in most Armenian Diaspora communities the world over. It supports Armenian nationalism and the international recognition of the brutal mass evacuation (and increasingly-acknowledged genocide) of Armenians by Turkish forces during World War I.<br /><p><br />The goals of the Federation of Armenian Revolutionaries  --  Revolutionary Movement remain unclear, though given the year and the location of their only attack, it can be inferred that they represented an extreme faction within the greater ARF movement in Lebanon, which is home to a substantial Armenian expatriate community. ARF took a neutral position in the Lebanese Civil War, not supporting any of the many rival factions, including the Christian Phalangist Party, a former ally. Opposition to this policy may have triggered the Federation of Armenian Revolutionaries  --  Revolutionary Movement to carry out their only attack.<br />