Well first off, his statement is flawed.
The Jewish people are located all over the world. I would say that most of them are in the USA, Russia and Europe.
Something like 85% of the world’s Jews live in Israel or the United States.
There is still a remnant living in the mountains of Yemen.
My daughter asked me what the future will be like in 50 years. She meant from a sci fi, technology, point of view. I said sadly the future could be very bleak, if Islam prevails.