Brunei’s Sultan Hassanal Bolkiah has named one of his youngest sons as foreign minister in a major cabinet reshuffle – largely seen as a move to prepare for the next generation of leaders in the oil-rich kingdom.As the 10th child and fourth son of the sultan, Prince Abdul Mateen is down the line of succession, but his matinee idol looks have earned him more than 3 million followers on Instagram, providing a modern face to the royal family.Another younger son, Prince Abdul Malik, was also...