Police in tactical gear block a road leading to the Diaoyutai State Guesthouse in Beijing, Tuesday, March 27, 2018. Unusually heavy security at a Beijing guesthouse where prominent North Koreans have stayed in the past and media reports of a special train arriving have raised speculation that Kim Jong Un is making his first trip to China as North Korea's leader. (Photo by Mark Schiefelbein/AP Photo)
