Long range mesh on planes? Otherwise, it's pretty difficult to setup base stations in your enemies territory.

The drones themselves build a mesh network during an attack. Russia does this as well.

I would also guess it is not that hard to setup a base station? With Operation Spiderweb they were able to start the drones from enemy territory...

Allegedly Ukraine was using UK and their extensive network of satelites to target russia. So starlink withdrawal is not a real problem.