What president was assassinated in an explosion on August 1981, and was succeeded by a man elected as the new Supreme Leader by the Assembly of Experts on 4 June 1989 at the age of 49?
Government of Mir-Hossein Mousavi (1985–89) In August 1981, President Mohammad-Ali Rajai and Prime Minister Mohammad-Javad Bahonar were assassinated in an explosion. Ali Khamenei was then elected as the third president of Iran in the Iranian presidential election, October 1981. He put forward Ali Akbar Velayati as his prime minister, but the Iranian parliament did not give him the vote of confidence, and he was defeated with a vote of 80 to 74. Subsequently, Ali Khamenei, though he had strong disagreements with Mousavi, as a compromise with the left-leaning parliament, agreed to offer him, Mousavi, for the post of premier. On 28 October, the parliament approved Mousavi with a vote of 115 to 39. Mousavi became the 79th Prime Minister of Iran on 31 October 1981, and remained the prime minister of Iran until 3 August 1989, for eight years.
Habibollah Asgaroladi Habibollah Asgaroladi Mosalman (Persian: حبيب‌الله عسگراولادی مسلمان‎ ‎ ‎; 3 January 1932 – 5 November 2013) was a leading senior Iranian politician who was the leader of Islamic Coalition Party, a highly influential conservative political party in Iran. He was also a two time presidential candidate, first in July 1981 and next in 1985. During the presidential elections in 1981, in which he ran for the presidency, an attempt was made to assassinate him outside his home in Iran Street, but this failed and resulted in his bodyguard being killed but Asgaroladi himself escaped largely unhurt.