There was something in the last page about the possibility of forgetting that the Romulans were allies to the Federation during the end of DS9. Too many posts to bother quoting, so I won't.
In "Inter Arma Enim Silent Leges", Sloan predicted that the next major rivalry in the Alpha Quadrant would be between the Federation and the Romulans. He says that the Romulans will be a very temporary ally and are only allied with the Federation to fight the Dominion and nothing else.
Exact dialogue:
Sloan: "Section 31 is extremely interested in this conference of yours. However, the Tal'Shiar will be handling the security arrangements, so we have virtually no chance of using any technical assets to gather intelligence. As a result, we'll be forced to rely on organic assets, like you. Your mission is to gather data on the Romulan leadership. In essence, we want you to take the pulse of their government. No pun intended."
Bashir: "You want me to spy on an ally."
Sloan: "To evaluate an ally.
And a temporary ally at that. I say that because when the war is over, the following will happen in short order. The Dominion will be forced back to the Gamma Quadrant, the Cardassian Empire will be occupied, the Klingon Empire will spend the next ten years recovering from the war and won't pose a serious threat to anyone.
That leaves two powers to vie for control of the quadrant, the Federation and the Romulans."
Bashir: "This war isn't over and you're already planning for the next."
Sloan: "Well put. I hope your report is equally succinct."
Fin.