Kuwait’s Emir, Sheikh Sabah al-Ahmed al-Sabah, has died at the age of 91, state media report.
His 83-year-old half-brother, Crown Prince Sheikh Nawaf al-Ahmed, has been named by the cabinet as his successor.
In July, Sheikh Sabah was flown to the United States for medical treatment following surgery for an unspecified condition in Kuwait that month.
He had ruled the oil-rich Gulf Arab state since 2006 and had overseen its foreign policy for more than 50 years.
He was dubbed the “dean of Arab diplomacy” for his efforts to restore relations with states that backed Iraq during the 1990-1991 Gulf War, when Kuwait was invaded by Iraqi forces.