That's nice, but it wasn't answering the question he asked.
Detailed answer of ship routes and sea port to answer
"How is Russia is met with NATO choke points in sea of Azov?"
Sea of Azov and entirety of black sea Is clogged with NATO ports, lack of friendly ports. Nato ships regularly patrol the area and watch shipments coming from Kherson port.
That is great, but it has nothing to do with what you said here;
Which really displays a lack of understanding of the geography of the region.
Per your own map the bridge at Kerch is well out of range of the GLSDBs. You also seem to think the Crimean peninsula is connected to the mainland only by bridges, which isn't true at all. And you seem to think that the Sea of Azov is the only way Russia could ship things to Crimea - which ignores the half dozen ports Russia has on the eastern coast all the way down to Sochi.
But by all means reply to this by talking about ports in Syria or whatever. Maybe mention Kaliningrad or Vladivostok or Murmansk for good measure.
Direct line fton Zaporizhzia to Crimean bridge is 180 miles which is in range of both ATACMS and HIMARS. GLSDB can hit airfields and command centers in same way.
Look at what happened at Makiivka three weeks ago and figure out the rest.
Did you know that latter can fire up to 499 kilometers?
Forcing Russia to carry cargo and conscripts from mainland takes time, moreover more resources. Russian logistics are already notorious for being shit, so adding ferries and ships would complicate matters even further.
Since water supply to Crimea is controlled in Kherson, Ukraine can choke the area and russian troops there attrition tactics.
Due to corrupt local officials they didn't detonate the bridge in 2014, which would've halted Crimean invasion altogether. Russians need that bridge to operate.
