Succession has been from brother to brother since the death of the founder of modern Saudi Arabia. Ibn Saud was succeeded by his son Saud. Saud was succeeded by his brother Faisal. Faisal was succeeded by his brother Khalid who, in turn, was succeeded by his brother Fahd. Fahd was succeeded by his brother Abdullah, and Abdullah by his brother Salman, the current King. Salman appointed his half-brother Muqrin as Crown Prince in January 2015 and removed him in April 2015. Even Abdulaziz's youngest son was to turn 70 in 2015. Abdulaziz, in 1920, had said that the further succession would be from brother to brother, not from father to son.