US Defense Official Had ‘Havana Syndrome’ Symptoms During a 2023 NATO Summit, the Pentagon Confirms

Tourists ride classic convertible cars on the Malecon beside the United States Embassy in Havana, Cuba, on Oct. 3, 2017. Desmond Boylan/AP Photo

WASHINGTON—A senior Defense Department official who attended last year’s NATO summit in Vilnius, Lithuania, had symptoms similar to those reported by U.S. officials who have experienced “Havana syndrome,” the Pentagon confirmed Monday.

Havana syndrome is still under investigation but includes a string of health problems dating back to 2016, when officials working at the U.S. Embassy in Havana reported sudden unexplained head pressure, head or ear pain, or dizziness.