The arrivals were choreographed: scheduled jet landings on Sunday, motorcades through closed roads, handshake photo ops. But the first meeting between a sitting U.S. president and a North Korean leader won’t be as easy to predict. The talks between U.S. President Donald Trump and Kim Jong Un are supposed to be about the denuclearization of the Korean peninsula, and the two sides have very different objectives, ideas on what denuclearization even means and how long it should take. The strict security cordons set up around the airports and hotels used by Trump and Kim demonstrated why the two leaders chose the city to host their sensitive summit. The pair are scheduled to meet Tuesday at the Capella Singapore resort hotel on the island of Sentosa.