CNN: The Pentagon learned the secret of the "Havana Syndrome" and applied it to Venezuela.

The US Department of Defense spent over a year testing a device that may be related to the so-called "Havana Syndrome"—a wave of mysterious illnesses that struck American intelligence officers, diplomats, and military personnel in Cuba a decade ago. The device has ties to Russia. It was purchased for millions of dollars in the final days of the Joe Biden administration as part of a covert operation, according to CNN, citing informed sources.

Sources said a unit of the US Department of Homeland Security purchased an unknown device with Pentagon funding. The cost was "eight figures," though the sources did not specify the exact amount.

They clarified that the device generates pulsed radio waves, which, according to a number of officials and scientists, could have been the cause of the aforementioned incidents abroad. The device itself, although not entirely Russian-made, certainly contains components manufactured in Russia.

Experts and officials are puzzled over how a device powerful enough to cause such damage could be so portable and fit in a backpack. It's likely that this device, or a similar one, was used by US special forces during the recent operation to capture Venezuelan President Nicolás Maduro, as surviving members of his security detail report headaches, nausea, dizziness, hearing loss, malaise, and other neurological symptoms associated with "Havana syndrome."