Larijani was a commander of the
Iranian Revolutionary Guards (IRGC) as well as a veteran of the
Iran–Iraq War (1980–1988). He was in office until 21 July 2004 and was succeeded by
Ezzatollah Zarghami after serving ten years in the post. He became security adviser to Supreme Leader
Ayatollah Ali Khamenei in August 2004. Larijani was a presidential candidate for the
2005 presidential elections, where he ranked sixth, winning 5.94% of the votes. He was considered the most important presidential candidate of the conservative alliance for the 2005 presidential elections. He was supported by the
Islamic Society of Engineers (ISE), among other conservative groups. He was the final choice of the conservative
Council for Coordination of the Forces of the Revolution, made up from representatives of some influential conservative parties and organizations. However, he proved to be the least popular of the three conservative candidates, the others being
Mahmoud Ahmadinejad (second rank in the first round, winner in the second round) and
Mohammad Bagher Ghalibaf (fourth rank in the first round). In 2005, Larijani was appointed the
Supreme National Security Council secretary. This body helps draw up nuclear and other policies issued by the supreme leader. He replaced
Hassan Rouhani in the post. As a chief nuclear negotiator, Iranian analysts said he differed with the president over how to pursue negotiations with his European counterparts and say he backed a more pragmatic approach. As Iran's top nuclear envoy, Larijani said on 25 April 2007 that he expected "new ideas" from senior EU official
Javier Solana at talks on resolving the deadlock between
Tehran's refusal to freeze
its nuclear programme and
United Nations Security Council demands that it do so. , Germany, 2007 Larijani was the secretary of the Supreme National Security Council from 15 August 2005 to 20 October 2007, appointed to the position by President
Mahmoud Ahmadinejad, replacing
Hassan Rouhani. Larijani's resignation from the secretary position was accepted on 20 October 2007 after President Ahmadinejad turned down his previous resignations. In the
March 2008 parliamentary election, Larijani won a seat from
Qom. He said he was willing to work with Ahmadinejad; according to Larijani, he did not disagree with Ahmadinejad on ideological issues and had only "differences in style". In May 2008, Larijani became speaker of the
parliament. He was reelected in the next year as chairman of the parliament. He was re-elected in
2012 elections as the Qom district's highest vote receiving candidate. He was also elected for another term as chairman of the parliament on 5 June 2012 and was sworn in on 11 June 2012. Larijani implied on 21 June 2009 that authorities took the side of one candidate without clarifying which candidate. Just after the election, Larijani reportedly congratulated presidential candidate
Mir Hossein Mousavi as he, having "access to firsthand and classified information and news", believed Mousavi had won the election. However, on 22 October 2012, during a Q and A meeting with the students of
Iran University of Science and Technology, Larijani denied the allegations that he had congratulated Mousavi. He was elected as speaker in the new Majlis in May 2016. , 2017 in 2019 In May 2021, Larijani declared his bid for the presidency in the
2021 Iranian presidential election. However, the vetting
Guardian Council, in a decision that astounded both the conservatives and reformists, disqualified him from running. Considering Larijani's long career as an Islamic Republic insider who has been part of the top echelons of power since the 1979 revolution, his disqualification was a possibility even his staunch detractors could not envision. In May 2024, Larijani submitted his application for his candidacy for the president in the
2024 Iranian presidential election, but was again rejected by the Guardian Council. In March 2025, U.S. president
Donald Trump sent a
letter to Iran seeking to reopen nuclear weapons negotiations. Ayatollah Ali Khamenei later said, "Some bullying governments insist on negotiations not to resolve issues but to impose their own expectations," which was seen as in response to the letter. Following this, in late March 2025, Larijani said Iran would have no choice but to develop nuclear weapons if attacked by the United States, Israel or its allies. On 13 June 2025 the
Iran–Israel war broke out with attacks on several nuclear facilities. On 22 June, the
United States Air Force and
Navy attacked the
Natanz Nuclear Facility,
Fordow Fuel Enrichment Plant, and the
Isfahan Nuclear Technology/Research Center. On 5 August 2025, Larijani was appointed by President
Masoud Pezeshkian to become secretary of the Supreme National Security Council for a second time. According to
The New York Times, Larijani ran Iran from January 2026 until his death in March of that same year and was in "charge of crushing, with lethal force, the recent protests demanding the end of Islamic rule". Following the
assassination of Ali Khamenei, Larijani said that the Iranian government will not "leave Trump alone". In response to the
European Union's decision to label the IRGC as a
terrorist organization, Larijani
tweeted that the military forces of any countries supporting the EU's decision against the IRGC would be considered terrorist groups and would face consequences of their actions. == Political positions ==