A recent leak of U.S. classified intelligence reports appears to confirm what many Latin America and Caribbean watchers have warned about in recent years: Russia and China are trying to gain a foothold amid waning U.S. leadership. Screenshots of some of those documents obtained by the Miami Herald show that Russian mercenaries were planning to pitch a plan to provide security in Haiti after months of unsuccessful negotiations led by the United States to form a multinational force to help tackle escalating armed gang violence in the Caribbean nation. They also reveal that the Russian government...