Singapore's President Tony Tan Keng Yam (2nd L) and his wife Mary Chee Bee Kiang (L) listen to their national anthem with Japan's Emperor Akihito (2nd R) and Empress Michiko during the welcoming ceremony at the Imperial Palace in Tokyo, Japan, November 30, 2016. The President of Singapore is on a state visit to Japan. Crown Prince Naruhiro (rear 2nd L) and Crown Princess Masako (rear 3rd L). Japanese Prime Minister Shinzo Abe (rear 2nd R) and his wife Akie (rear R) are also seen. REUTERS/Kimimasa Mayama/ Pool