Havana Syndrome: New Sonic Weapon used Against American Diplomats in Europe - TLDR News

Havana Syndrome, affecting American diplomats, emerged in 2016 with symptoms like grinding metal sounds and skull pressure. Initially affecting CIA officers in Havana, it spread to other locations, including Vienna and Berlin. Theories about its cause range from psychological to directed radiofrequency energy, with the GRU suspected. The US government has launched investigations and passed the Havana Act to support victims.

What did the US National Academy of Sciences conclude about the possible cause of Havana syndrome?

What is the significance of the Gru in relation to Havana syndrome?

What actions did the US government take in response to the incidents of Havana syndrome?