Question: Which armed movements dedicated to Irish republicanism did one of its terrorist meet up in London to assassinate an Israeli nuclear scientist
Context: Ernst David Bergmann (Hebrew: ארנסט דוד ברגמן‎ ‎ ; 1903 – April 6, 1975) was an Israeli nuclear scientist and chemist.  He is often considered the father of the Israeli nuclear program. The Ulster Defence Association (abbreviated UDA) is the largest Ulster loyalist paramilitary and vigilante group in Northern Ireland.  It was formed in September 1971 and undertook a campaign of almost twenty-four years during the Troubles.  For most of this time it was a legal organisation.  Its declared goal was to defend Ulster Protestant loyalist areas and to combat Irish republicanism, particularly the Provisional Irish Republican Army (IRA).  In the 1970s, uniformed UDA members openly patrolled these areas armed with batons and held large marches and rallies.  Within the UDA was a group tasked with launching paramilitary attacks; it used the covername Ulster Freedom Fighters (UFF) so that the UDA would not be outlawed.  The British government outlawed the "UFF" in November 1973, but the UDA itself was not proscribed as a terrorist group until August 1992. The Glory Boys is a 1984 three-part British TV thriller mini-series, made for Yorkshire Television between 1 and 3 October 1984, starring Rod Steiger and Anthony Perkins.  It is about two terrorists, one from the IRA and another from the PLO who meet up in London to assassinate an Israeli nuclear scientist. Chon Chibu is a Nuclear Scientist who works on the DPRK Civilian Nuclear Programme at the Yongbyon Nuclear Scientific Research Center in DPRK.  Chibu was photographed in a track-suit while out on a sight-seeing tour of Syria in 2007.  Shortly after this Israeli Jets destroyed the Military Complex in Syria that Chibu had been visiting. The Irish Republican Army is any of several armed movements dedicated to Irish republicanism. The Romanian anti-communist resistance movement was active from the late 1940s to the mid-1950s, with isolated individual fighters remaining at large until the early 1960s.  Armed resistance was the first and most structured form of resistance against the communist regime.  It wasn’t until the overthrow of Nicolae Ceauşescu in late 1989 that details about what was called “anti-communist armed resistance” were made public.  It was only then that the public learnt about the several small armed groups, which sometimes termed themselves "haiducs", that had taken refuge in the Carpathian Mountains, where some hid for ten years from authorities.  The last fighter was eliminated in the mountains of Banat in 1962.  The extent and influence of the movement is sometimes exaggerated in the post-Communist Romanian media, memoirs of the survivors and even historiography, while the authoritarian, anti-Semitic and/or xenophobic ideology of part of the groups is generally overlooked or minimized.  The Romanian resistance is sometimes claimed to be one of the longest lasting armed movements in the former Soviet bloc. Irish republicanism (Irish: "poblachtánachas Éireannach" ) is an ideology based on the belief that all of Ireland should be an independent republic.  The development of nationalist and democratic sentiment throughout Europe in the eighteenth and nineteenth centuries was reflected in Ireland in the emergence of republicanism, in opposition to British rule.  This followed hundreds of years of British conquest and Irish resistance through rebellion.  Discrimination against Catholics and Non-conformists, attempts by the British administration to suppress Irish culture, and the belief that Ireland was economically disadvantaged as a result of the Act of Union were among the specific factors leading to such opposition. Amos Horev (Hebrew: עמוס חורב‎ ‎ ; born 1924, Jerusalem) is an Israeli military official and expert.  He served as a Haganah fighter before the founding of the state, and was later an Israeli Defense Forces (IDF) Major-General, Chief of Ordnance and subsequently Quartermaster General and Chief Scientist of the IDF, nuclear scientist, President of Technion University, and Chairman of Rafael.  In June 2010, he was appointed to the Israeli special independent Turkel Commission of Inquiry into the Gaza flotilla raid. Cheryl Ben Tov (Hebrew: שריל בנטוב), born Cheryl Hanin in 1960, is an American real estate agent and former Israeli Mossad agent who became well known in 1986 when, under the name "Cindy", she persuaded former Israeli nuclear technician Mordechai Vanunu to go with her to Rome, where he was kidnapped and transported to Israel.  Vanunu faced a secret trial and was sentenced to 18 years in prison, spending nearly 12 of them in solitary confinement.  Vanunu publicly released confidential information on Israel's nuclear reactor and stated that Israel had created nuclear weapons, becoming the sixth nuclear power and the first since the 1968 Treaty on the Non-Proliferation of Nuclear Weapons, of which Israel was not a signatory. The Irish Republican Army (IRA) is any of several armed movements in Ireland in the 20th and 21st centuries dedicated to Irish republicanism, the belief that all of Ireland should be an independent republic.  It was also characterised by the belief that political violence was necessary to achieve that goal.
Answer: The Irish Republican Army