Diplomats' Illnesses In Cuba Still A Question Mark

Reuters reports that U.S. officials are still investigating health problems at the U.S. embassy in Cuba. They do not know who or what was behind the mysterious illnesses, which began in 2016 and have affected 26 Americans.
Kenneth Merten, Acting Principal Deputy Assistant Secretary for Western Hemisphere Affairs, told a House of Representatives Foreign Affairs Committee hearing, “We don’t know who is responsible and we don’t know what is responsible for this.