Insta Pundit links to a story about a monster Soviet flying boat that molders at dockside somewhere in Dagestan.
It was intended for use as a fast motor-torpedo boat, able to fly under ship radars, and, thanks to a hull configured to exploit the ground-effect, deliver a big dose of supersonic anti-ship missiles.
I suspect the idea of airborne radars (AWACS and the Orion) would have occurred to Pentagon thinkers sooner or later. Wouldn't such a plane have a huge signature on a look-down radar?
But then, the Soviets had this thing for building stuff big.