Japanese Emperor Naruhito formally proclaimed his ascendancy to the throne on Tuesday in a centuries-old ceremony attended by dignitaries from more than 180 countries, pledging to fulfil his duty as a symbol of the state.

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https://www.thestar.com.my/news/world/2019/10/21/japanese-emperor-to-proclaim-his-enthronement-to-the-world-in-ancient-ceremony