So, I'm working on a Cold War time line, part of which is an excuse to play with some of the various weapon systems that were proposed or even tested but never put into development. So, I'd love to hear what your favorite scrapped weapons were. Two I already know about, and do not plan on using, are the Orion program and the Pluto atomic-powered cruise missile. Two I do plan on using are the AGM-48 Skybolt and a fictional successor, the AGM-101 Thunderbolt, and the B-71 (not the Valkyrie, but the bomber version of the SR-71). I'm particularly interested in anything from the Soviet side, since most of the ones I've found out about have been American.