Sunday's arrival in Singapore of North Korean leader Kim Jong Un, a closely watched figure across the globe, prompted local police to go on full alert ahead of the upcoming historic summit with U.S. President Donald Trump in the city-state.Kim's plane touched down around 2:30 p.m. A convoy of over 20 vehicles was soon after seen leaving Changi airport, with the leader riding in one of them. From the airport to the St. Regis Hotel where Kim is staying, 12 police motorcycles led the North Korean motorcade.At a restaurant in the luxury hotel in central Singapore, hotel staff prevented guests f…READ FULL ARTICLE