A close confidant of the Islamic Republic’s founder Ayatollah Ruhollah Khomeini, Mousavi was prime minister from 1981 to 1989.

Source: https://www.timesofisrael.com/ex-president-and-former-pm-of-iran-speak-out-in-favor-of-political-reform/

In 2019, Mousavi compared Khamenei to the former Shah Mohammad Reza Pahlavi, whose rule saw troops gun down demonstrators in an event that led to the Islamic Revolution.

Source: https://globalnews.ca/news/9461928/iran-protests-supreme-leader-people-detained/

Mousavi, 80, said the protest movement began in the context of “interdependent crises” and proposed holding a “free and healthy referendum on the need to change or draft a new constitution.”

Source: https://www.timesofisrael.com/ex-president-and-former-pm-of-iran-speak-out-in-favor-of-political-reform/

Mousavi was an IRGC member responsible for coordinating the military alliance between Syria and Iran.

Source: https://www.theguardian.com/world/live/2023/dec/25/israel-gaza-war-live-dozens-killed-as-israeli-strikes-on-gaza-continue-on-christmas-day

The video below shows an explosion following the strike that allegedly killed Mousavi near the Damascus International Airport.

Source: https://www.theyeshivaworld.com/news/israel-news/2249274/watch-iran-threatens-tel-aviv-in-hebrew-after-irgc-general-killed-israel-expects-response.html