Havana Syndrome

The U.S. intelligence community concludes it's "very unlikely" a foreign country is responsible for the so-called Havana Syndrome ailments involving U.S. officials working abroad.

The interim report says many cases have now been attributed to previously undiagnosed illnesses. But "a couple dozen" cases remain unresolved and are still under investigation.

Something strange is happening to American officials around the world. Migraines, dizziness, even brain injury. And the incidents keep happening. So who, or what, is behind Havana Syndrome?

In the 1970s and '80s, U.S. officials routinely referred to the Soviet use of microwave radiation against the American Embassy in Moscow. The Soviets were believed to be seeking intelligence.

Harris' trip from Singapore to the Vietnamese capital was delayed by roughly three hours. The U.S. Embassy in Hanoi reported "a recent possible anomalous health incident" that affected embassy staff.

In an NPR interview, William Burns says he has appointed a senior officer who led the hunt for Osama bin Laden to head the investigation into ailments that has afflicted U.S. officials worldwide.

Marc Polymeropoulous was one of the first Americans outside of Cuba to report symptoms consistent with what's called Havana Syndrome. It took him more than three years to get a diagnosis.

The symptoms, which include vertigo and memory loss, first affected American officials stationed in Cuba in 2016.

The study by the National Academies of Sciences comes after dozens of U.S. diplomats in Cuba and China complained of migraines, dizziness and memory loss.

Dozens of U.S. diplomats in Cuba and China have complained of chronic, unexplained ailments. Now an ex-CIA official says he had to retire after a trip to Russia led to debilitating migraines.