Necmettin Erbakan, the long-serving leader of Turkey's conservative Islamic movement, died Sunday at the age of 84.

Mr. Erbakan was best known for the short-lived government he headed in the 1990s. He was driven from power in February 1997 after just a year in office by pressure from the Turkish military, which saw Mr. Erbakan as a threat to Turkey's secular nature. The bloodless change of government that followed is referred to by many Turks as a "postmodern coup."

Mr....