 to Southeast Asia where Vietnam has announced the death of Nguyen Phuong Chuang. The 80-year-old was the leader of the ruling Communist Party. The announcement came just a day after Vietnam's president, Tho Lam, took over Mr. Chuang's duties. The BBC's Mickey Bristow explains. In office, Mr. Chuang tightened party discipline and tried to tackle corruption. He also continued economic reforms that had turned Vietnam from one of the world's poorest countries into a middle-income nation in just a generation.