Will we see container ship based arsenal ships for first strike?
Some big container ships are 20k+ TEU (meaning 10k+ standard 40ft containers).
Take one of those. Each container holds 5-6 Shahed style drones. Internet claims range is at least 600mi.
Figure out some way of jettisoning empty containers.
Park the ship 500mi off of some coastal city. Fly them in low, stay under the radar as long as you can. 100mph cruise means you have 5 hours until certain detection, potentially less depending on luck. Hope to deplete your magazine before any counterattack.
Literally tens of thousands of drones from a single ship could wipe out/deplete any non-EW based countermeasures and devastate any metropolitan area. Coordinate a few locations at once for best luck.
Obviously this would have to be a surprise attack to start a war, once the war is active good luck getting close enough. It won't be cheap, it'd be one time use, but it could use "conventional" weapons to deliver thermonuclear level destruction.
Do we know of any countries trying to build ships like this?