Parts of the world are ushering in the New Year with spectacular fireworks displays.
Londoners have been treated to a firework display that Mayor Sadiq Khan said would be the "best ever" before the famous glitter ball drop took place in Times Square, New York.
Earlier a million people descended on a hazy Sydney Harbour in Australia for a controversial midnight display granted an exemption to a total fireworks ban amid devastating bushfires.
Samoa and the tiny Pacific island of Kiribati were among the first countries to celebrate the start of the new decade.
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