UFC fighter Natan Levy says he's currently around 25-30 miles away from the heinous attacks Hamas is unleashing on his native Israel ... and the scene is horrifying.
The 32-year-old flew to Israel just a few days before the weekend wave of terror began ... and simply intended to spend time with his family at a cousin's wedding.
But, Tuesday on "TMZ Live," he told us about the moment all their plans changed, and they went into survival mode.

Natan said he and his family fled to a bunker as soon as they heard sirens in the area, but thought it was "just missiles" .