Emboldened by the success of the 1979
Iranian Revolution, the anti-
Baathist Shi'a Islamist group al-Dawa, with financial and military assistance from the
Islamic Republic of Iran, began to employ violence in its struggle against the Iraqi government. In 1979 and 1980, al-Dawa assassinated a number of "senior but low-profile" Baathist officials in Iraq. In response to a failed assassination attempt on Iraqi Deputy Prime Minister
Tariq Aziz in April 1980 by al-Dawa, the Iraqi government launched a severe crackdown on the group, which included the execution of al-Dawa spiritual leader
Mohammad Baqir al-Sadr. The remaining al-Dawa leadership fled to
Iran and the group became an "effective proxy" for the Iranian government against Iraq during the
Iran–Iraq War, which broke out in September 1980. ==Bombing==