Or they will be, soon.
Looks like some pretty big Xbox 360 games are going to be added to the backward compatibility list on Xbox One pretty soon- in its blog post detailing the Tom Clancy game spotlight sale, Xbox let slip that Splinter Cell: Conviction and Ghost Recon: Advanced Warfighter are both going to be made available on Xbox One via backward compatibility soon.
“Or if you’d prefer to play some of the modern classic Tom Clancy games, available on Xbox 360 and Xbox One through Backward Compatibility, Splinter Cell: Conviction and Ghost Recon: Advanced Warfighter are also discounted up to 67% off!” the copy on the web page originally read (thanks to NeoGAF for spotting this). Right now, the Xbox One part has been removed, which seems to indicate that they jumped the gun on making the announcement.
While Conviction remains a controversial game, Advanced Warfighter is much beloved by fans of the series. On the whole, this is a good pair of games being made available to Xbox One players for sure.