The Mexican Navy announced on Thursday that it has begun a search-and-rescue mission in the Caribbean Sea for two sailboats carrying "humanitarian aid" to Cuba. Reuters describes the vessels as "sailboats" and says they left Isla Mujeres, in the Mexican Caribbean state of Quintana Roo, last week. They did not arrive in Havana as scheduled on Tuesday or Wednesday. The journey is about 300 to 350 miles, depending on the route. Combined, the two boats had nine people on board, including eight adults and a four-year-old child. The Mexican navy said Thursday that it was searching for two boats transporting...