damien: Shadow Watch: Red Storm Entertainment was later turned into Ubisoft Red Storm, so Ubisoft most probably owns the rights.
I looked at Red Storm again as I hadn't realised that Tom Clancy actually co-founded the publishing company himself!
There are actually 3 of these games - Politika, ruthless.com and Shadow Watch, the BOOKS are the 1st 3 in the 'Tom Clancy's Power Plays' series
http://en.wikipedia.org/wiki/Tom_Clancy%27s_Power_Plays But the games don't mention Power Plays or claim to be connected so I've added them separately - what would be your take on that though?
Mobygames actually lists Shadow Watch as a game that was made into a book and not the other was around and Wikipedia says that Politika had a demo of the game included on a mini CD - generally it seems like a very different situation than games based on Dune, LotR etc...
Added 3 or 4 other games from the Red Storm website
http://redstorm.com/games like Force 21 and BANG! Gunship Elite
However DIDN'T add:
Anne McCaffery's Freedom as that one DOES look book licensed (apparently no Mobygames entry though, so I couldn't research it as much as I'd like)
America Army - 'The Official Game of the US army' seems a bit licensed-ish
The Sum of All Fears - Has Morgan Freeman and Ben Afflek faces on the front so clearly based on the film!
RIP Tom Clancy, by the way