100km isn’t a stretch? 62 miles?
As long as you can overcome the curvature of the Earth, it can be done.
The distance record for WiFi using directional antennas is 237+ miles, last I looked, by a team in South America. I think the Swedes bested that record, but I recall they used an amplifier and they bounced their signals off a balloon.
The parties in the middle east haven’t discovered anything new. Long-range UHF propagation is stuff that US & UK radio amateurs have known about for decades. The #1 thing that you need is a very good antenna, and the more directional the better. You need low-noise input amplifiers at the receiving end and you need to get the antennas aimed properly.
I won’t bore you with the records set by hams using the moon as a signal reflector. Let’s just say that with some proper antenna design and a 50+ watt amplifier, you could bounce WiFi signals off the moon to someone clear on the other side of the earth. The higher level protocols might go nuts with the delay on packet retransmissions, but the radio part of the issue would be entirely feasible.