a fairly gripping read, I enjoy a lot of the agent stuff and couple it with some decent sci-fi and I'm away.
Of particular note was the method of communication - i.e. line-of-site seemed to be necessary for television-style broadcasts to the public in this period. An almost pivotal plot point, too. Room for a sequel - I don't think Heinlein ever did one though. Nothing special, but an enjoyable story with the usual Heinlein attention to detail.