Seems like a fun project to start
As for directional antennas for specific areas - this can be somewhat solved by simply adding frequencies for propaganda in various languages, having like "BBC_Italy", "BBC_Germany" etc. and making sure target area is covered by station range. I'd be more worried about the disk space it would take to have enough multi-language news to make listening to the channel worth it.
That, and one would need people fluent in languages used, to search for and understand the content of broadcasts in order to put them in correct time.