TEHRAN, Iran -- Saudi Prince Mohammed bin Salman, son of King Salman, has replaced his cousin Mohammed bin Nayef as crown prince following a surprise promotion, adding to his already sizable authority on foreign relations and economic matters.
Elevation of anti-Iran hard-liner has neighbors concerned

Mohammed bin Salman, Saudi Arabia's new crown prince, on a visit to Japan in 2016.
TEHRAN, Iran -- Saudi Prince Mohammed bin Salman, son of King Salman, has replaced his cousin Mohammed bin Nayef as crown prince following a surprise promotion, adding to his already sizable authority on foreign relations and economic matters.