(NewsNation) — U.S. government employee “Adam,” a victim of “Havana syndrome,” says Russian military intelligence is “very clearly” behind the mysterious ailment that has afflicted diplomats and spies globally.

“This is stuff we already knew. We were waiting for this day. It’s very clearly a Russian operation,” said “Adam,” who added that he’s not allowed to disclose his actual identity, on “Dan Abrams Live.”

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

“It was rough: Long term effects. Blind in one eye, I (now) have a service dog. The list goes on, just like so many others,” “Adam” said.

The injuries to U.S. government personnel or their families were part of a “60 Minutes” report Sunday that suggested Russia is behind the incidents, one of which took place during the 2023 NATO summit in Vilnius.

On Monday, the Kremlin dismissed the report.

“This is not a new topic at all; for many years the topic of the so-called ‘Havana Syndrome’ has been exaggerated in the press, and from the very beginning it was linked to accusations against the Russian side,” Kremlin spokesman Dmitry Peskov told reporters when asked about the report.

The Associated Press contributed to this report.