I fear Generals who are still planning the prior war.
Re: “How do you defend against a drone swarm launched from a container ship...”
Sink the ship?
Actually, I’ve been asking that same question since drone technology became a commercial business five years ago.
I don’t think you need a “swarm.”
I think any legitimately registered cargo vessel could put a tactical nuke over the White House or Wall Street any time it wants to.
I mean, would a low flying drone with a tiny heat signature even show up on radar?