Popular Revolutionary Resistance Organization

The Popular Revolutionary Resistance Organization – PRRO (Arabic: التنظيم الثوري للمقاومة الشعبية transliteration Al-Tanzim al-Thawri lil-Muqawama al-Sha'abiyah) or Organisation de la Resistance Populaire Révolutionnaire (OPPR) in French, was an anti-Syrian Lebanese nationalist underground terrorist group that emerged in March 1987, being responsible for a single combined bomb-and-rocket attack on a West Beirut hotel. Four residing Syrian intelligence officials were wounded in the course of action, and although the group warned of forthcoming attacks, little was heard of them since.

Source: Wikipedia — Popular Revolutionary Resistance Organization (CC BY-SA 4.0)