Secret 5G is not as common because there is a huge incentive to resell the free service. Maybe with eSIM it will be harder. Kindles uses to have a free data plan SIM.
Basically yes. Ukraine has a big problem with soviet commanders who waste lives needlessly. The post Soviet younger commanders have much better reputations and use that to recruit, ie 'you can join my unit and won't be conscripted'. The popular and successful units grow and split into sub units. This way they dont have to fire the unpopular soviet era but politically connected commanders, they just slowly lose relevance.
I think the actual purpose of the market is to reduce corruption. When everyone has to publish prices and Pavel pays his mate 3x for the same drone it's easier to flag for auditing.
They didn't ask for only a non audible change, because they know that it will not be. It's just marketing and misdirection because the truth is much less rosy.
A navy base on the contested straight of hormuz is always going to be a priority target. Militaries have pre existing contingency plans. Typically military bases don't move very fast.
That's only possible under specific climatic conditions where there's separate temperature/pressure layers. Which is why they asked to repeal the ban on supersonic flight over populated areas. If they actually thought it wouldn't make noise they wouldn't be asking for the rule to be changed.
Overland private supersonic travel should not happen, it would just be a massive unpriced negative externality.
The lower the plane flies the fewer people end up hearing the boom. The denser air also requires an absurd amount of fuel to fly through. Commercially uneconomical. Even the military only uses low level supersonic for a last dash to the target.