Countries around the world celebrated New Year 2016 in grand style but both Brussels and Paris have cancelled annual New Year's Eve fireworks displays as soldiers and police ramped up security in European capitals over perceived terror threats.Samoa was one of the first to mark the new year at about 10am UK time with New Zealand following an hour later.Duke and Duchess of Cambridge tweet New Year's greetings. The festivities in the US and Canada are underway for New Year celebrations.In New York, thousands of revellers converged on Times Square, amid tight security, to watch the famous ball descend.The party’s building up in New York where performers of various stripes have been on stage in Times Square in front of a crowd expected to reach close to one million.