You've seriously got to be joking now. Put the area under full British military control? It's a foreign country, the only way you'd get British control is to invade first. The government wouldn't allow another nation's military to just take over. Assist and co-operate, sure, but be in full control without any Thai involvement? Come on, you've watched too many films.
And you're nothing like Musk. His suggestions actually have merit, and he's in serious discussion with a Thai space engineering expert who agrees with what he's suggesting. He's also sent engineers and members from SpaceX and The Boring Company to assist, along with full battery packs to give portability where they desperately need it. Add to that the fact that the site already has thousands of experts that have clearly been discussing and discounting options from the day they arrived, it clearly isn't anywhere near as simple as you seem to think it is, otherwise they'd have done it by now.
If you were in charge there, those kids would be dead. "Put them under anaesthetic if they panic and then drag them through the cave system by cable". All anaesthetic would do is make them less susceptible to pain, not stop them from panicking. Sure, good idea. That'll definitely get them out safely!
Finally, your comparison of a river search vs a water-filled cave are nowhere near the same situation. You can't even remotely compare, given that diving in a river poses far less danger than the diving in this cave system.
Maybe you should turn off your computer and get some fresh air. It might help whatever it is causing your brain to send the signals to your fingers to write such nonsense.
