The Telegraph Microwave'attack ‘might have triggered mystery diseases of US diplomats in Cuba and China American diplomats who suffered secret diseases at United States embassies in Cuba and China may have been the victims of “directed”microwave radiation similar to that used by the Soviet Union. A new report by the National Academy of Sciences, which was commissioned by the United States State Department, is the current effort to find a cause for the confusing symptoms that began to emerge in late 2016 amongst American workers in Havana. In between late 2016 and May 2018, a number of United States and Canadian diplomats published in Cuba's capital experienced illness from an unknown cause. One United States government count put the number of American workers impacted at 26. Some reported hearing high-pitched noises comparable to crickets while at home or remaining in hotels, causing an early theory of a sonic attack. An audio recording of a persistent drone noise was made by United States personnel in Cuba. The study into the illnesses released on Saturday discovered that “directed, pulsed radio frequency energy appears to be the most plausible” description for symptoms that consisted of extreme head pressure, lightheadedness and cognitive problems. It found this description was most likely than other formerly thought about causes such as tropical disease or mental problems. The study did not name a source for the energy and did not say it came as the outcome of an attack, though it did note that previous research study on this type of injury was carried out in the former Soviet Union. The Soviets are understood to have assaulted the United States embassy in Moscow with microwaves in the 1970s and 1980s. In its report, the 19-member committee kept in mind that it dealt with substantial challenges in trying to get to the bottom of the medical secret. Among them, not every diplomat reported the exact same signs and the National Academy of Sciences research did not have access to all the previous research studies on the illnesses, some of which are classified. “The committee discovered these cases rather concerning, in part since of the possible function of directed, pulsed radiofrequency energy as a mechanism, but likewise since of the substantial suffering and debility that has actually occurred in a few of these individuals,” stated committee chairman David Relman, a professor of medication at Stanford University. “We as a nation requirement to address these particular cases along with the possibility of future cases with a collective, collaborated, and comprehensive technique.” The health impacts were experienced by about 2 dozen Americans affiliated with the US Embassy in Cuba as well as Canadian diplomats and workers at the US consulate in Guanghzhou, China, in early 2017. The health problems triggered the US to more than halve the number of diplomats in Havana in 2017.