This is a war that is also fought online. It is extremely important to keep the flow of information running from Ukraine. Putin will very likely order to shut down cellphone coverage and the Internet in Ukraine as soon as they full enter Kyiv and he'll fear about reports of either mass killings among civilians and/or defeats among the Russian military; such information reaching both the world and Russian people is what he fears the most.
Shutting down communications would be also a problem for keeping the resistance interconnected, as common analog walkie talkies wouldn't be an option for being easy to tap, and they essentially speak the same language.
I wonder what can be done to quickly hand Ukrainians satellite Internet routers plus the infrastructure to build mesh stations and keep them connected.
@elonmusk, while you try to colonize Mars — Russia try to occupy Ukraine! While your rockets successfully land from space — Russian rockets attack Ukrainian civil people! We ask you to provide Ukraine with Starlink stations and to address sane Russians to stand.
> Putin will very likely order to shut down cellphone coverage and the Internet in Ukraine
It's easy to shut down internet in Belarus or Kazakhstan, because they deliberately wired their connectivity through single control point.
Ukraine has multiple cross-border connections and exchange points within, so it's not just a press of a button, but a full blown min-cut max-flow adventure.