Apostasy in Islam taken place. Justifications offered for the alleged executions vary, but one of the most common theories advanced is that they were in retaliation for the 1988 attack on the western borders of Iran by the PMOI Mujahedin. However, this does not fully account for the targeting of other leftist groups who opposed the Mujahedin invasion. Salman Rushdie is a prominent contemporary figure accused of apostasy. In 1989 a fatwa was issued by Ayatollah Khomeini, the ruler of Iran at the time, calling for the death of Salman Rushdie for the blasphemy of authoring the book "The Satanic Verses". Hossein Soodmand,
Political thought and legacy of Ruhollah Khomeini "dignity of Prophets", or "undermines moral and ethical values." One observer, Iranian political historian Ervand Abrahamian, believes that some of the more well-known violations of international human rights initiated by Khomeini—the fatwa to kill British-citizen author Salman Rushdie and the mass executions of leftist political prisoners in 1988—can be explained best as a legacy for his followers. Abrahamian argues Khomeini wanted to "forge unity" among "his disparate followers", "raise formidable -- if not insurmountable -- obstacles in the way of any future leader hoping to initiate a detente with the West," and most importantly to "weed out the half-hearted from