Mir-Hossein Mousavi the right wing of the Islamic Republic, continued during their eight years of shared governance. However, an escalation in conflicts between the two led to Mousavi's resignation shortly after the end of the Iran–Iraq War in 1988. As the prime minister, Mousavi had the full backing of Ruhollah Khomeini, the supreme leader, and he refused to accept his resignation. While his government was viewed as somewhat liberal, he was still under the pressure of hardliners, though Khomeini generally protected Mousavi from the conservatives and gave him a free rein in deciding actions for the economy. However, his involvement in security
Hossein Shariatmadari Mir Hossein Mousavi was trying to "escape punishment for murdering innocent people, holding riots, cooperating with foreigners and acting as America's fifth column inside the country" and called for Mousavi and former reformist President Mohammad Khatami to be tried in court for "horrible crimes and treason." In 2009, during the first contested presidential elections, Shariatmadari was announced that Mohammad Khatami would risk the same fate of Benazir Bhutto if he was elected. After the elections, alongside the Green Party protests, Shariatmadari accused Mir Hossein Mousavi of being a fifth column of the US and causing the deaths of many people.