The Suliban receive their orders from the future but I still don't quite understand who from. Who is that dark figure (popularly known as Future Guy) who stands in the portal talking to Sillik?
From the first episode, many people were speculating he'd be a Romulan. (My other theory was that it would be Archer's Dad!)
What's interesting is that, in tthe original draft of Season Four's "Kir'Shara", Major Talok was a native Vulcan and was not an undercover Romulan operative. Originally, the Romulan spy in the final scene was to have been a new, never-before-seen character, but there was no money left in the budget to pay for another speaking role. Writer Mike Sussman adjusted the scene, turning Talok into the Romulan spy, as the Major's role had already been budgeted for. The re-use of a 24th century Romulan uniform (from Star Trek Nemesis) helped trim the budget further, allowing the scene to be included in the finished episode. Had the scene been cut, as it very nearly was, the Romulans' role in the Vulcan Civil War would have remained completely hidden, even from the audience.
As it is, maybe Talok was Future Guy?