"His Highness the Emir of Kuwait Sheikh Nawaf Al-Ahmad Al-Jaber Al-Sabah left Kuwait for the US Thursday for regular medical tests," KUNA said on Twitter.
Nawaf Al-Ahmad Al-Jaber Al-Sabah, born in 1937, is the sixteenth ruler of Kuwait. He became the Emir last September following the death of his half-brother, Sabah al-Ahmad al-Jaber al-Sabah.