Kuwait's Emir Sheikh Sabah dies at 91

Kuwait's Emir Sheikh Sabah Al Ahmad Al Sabah has died, state media reported Tuesday. He was 91. The cause of death was not made clear, but he fell ill with an unspecified condition earlier this year.

Sheikh Sabah, whose family has ruled Kuwait for 260 years, had served as emir, the country's ultimate authority, since 2006. Before that he was prime minister and, for many decades, foreign minister. While in that role, per BBC, the staunch U.S. ally became known as the "dean of Arab diplomacy" for his efforts to restore relations with countries that supported Iraq during the Gulf War when Iraqi forces invaded Kuwait.

As emir, The Associated Press notes, he served as a mediator between Qatar and several Arab nations that launched a boycott against Doha, but the situation remains unresolved. In 2011, he maintained power during the Arab Spring protests, while still allowing demonstrations.

He is expected to be succeeded by his half brother, the 83-year-old crown prince, Sheikh Nawaf Al Ahmad Al Sabah. Read more at BBC and The Associated Press.