Japanese Emperor Naruhito’s enthronement draws royals and leaders from 170 countries

• Prince Charles, Saudi Arabian Crown Prince Mohmmad bin Salman, Philippine President Rodrigo Duterte and Chinese Vice-President Wang Qishan are expected to attend the Oct 22 ceremony
• But South Korean President Moon Jae-in is likely to give it a miss, as Seoul and Tokyo are locked in a trade dispute fuelled by historical and territorial disagreements