Heng Swee Keat becomes Singapore’s sole Deputy Prime Minister, paving the way for him to succeed Lee Hsien Loong

• Heng, 57, will be the sole No. 2 leader after current Prime Minister Lee Hsien Loong, a departure from convention as there are usually two DPMs
• The cabinet reshuffle announcement also said Lee would move his two current deputies, Teo Chee Hean and Tharman Shanmugaratnam, to senior minister roles