Sheikh Sabah al-Ahmad al-Jaber al-Sabah, the ruling emir of Kuwait, has died. He was 91. Sheikh Sabah had ruled Kuwait since 2006 and had overseen its foreign policy for more than five decades. He was flown to the US for treatment following a surgery for an unspecified condition in Kuwait. Sheikh Nawaf al-Ahmed, his 83-year-old half-brother and crown prince, is expected to take his place.