I might go as far as argue that Sisko is making dishonest logs in order to give Starfleet deniability in its war preparations.
I might argue that interpretation if we were talking about any of our other commanding officer heroes, but that sort of thinking is in line with what we see from Sisko, especially as the war seems to become an inevitability.
Do you think then that Starfleet's motivations in resuming a cautious push into the Gamma Quadrant were more tactical in nature than scientific, or an equal mixture of the two? We see in "Meridian" that the
Defiant appears to be maintaining long range observation only, running sensor sweeps but not visiting the planets in question.
BASHIR: I've run a preliminary analysis of our sensor sweeps, and the second planet in the Kylata system is definitely M-class.
DAX: I wish we'd had time to beam down to the surface and take a closer look.
O'BRIEN: I'd hate to have run into a Jem'Hadar patrol while we were down there picking flowers.
SISKO: Fortunately there's no sign of any Dominion activity in this sector.
Their caution is obviously because of the threat of Dominion interference, though no enemy activity has been detected in the sector of space they are exploring. This implies that their exploration mission is not a normal Starfleet science excursion, but more akin to a scouting mission in-and-out behind enemy lines (something supported by Dax's wording when she says "I wish we'd had TIME to beam down to the surface.")
If that's the case, however, does that mean the mission was purely tactical in nature, only undertaken in hopes of gaining an advantage against the Dominion? Or can we only infer from that that Starfleet (and Sisko) acknowledge that this normal scientific survey cannot proceed as normal BECAUSE of the Dominion threat?
After all, once their sensors detect a sufficiently interesting gravimetric distortion in a nearby system, they are quick to investigate at close range.
DAX: I'm picking up very unusual gravimetric distortions in the Trialus system.
SISKO: Any idea what's causing them?
DAX: It's hard to tell at this range.
SISKO: Let's take a closer look.
After discovering that this phenomenon is coming not from Trialus' star, but from a planet which materializes out of apparent nothingness, they don't hesitate for a moment to beam down to its surface to share a friendly meal with its inhabitants.
Of course, we come around to the same question, whose answer can be interpreted multiple ways. Does their reaction here indicate their entire excursion was scientifically oriented? Does it indicate that Sisko hopes this planet's secret could be of some tactical use? Or does it mean that, despite the original mandate of their mission being tactical, their scientific curiosity simply got the better of them?
I'd see this from the exact opposite angle. The Federation would not cooperate with a nation that is engaged in building V2 rockets for the Nazis while the Nazis are raining those rockets on London or Antwerp...After the war, the situation would flip, and the rocket experts would receive lucrative deals.
Though we only know that Insurrection takes place in 2375, and not whether its events take place before or after the war, I have to agree with your interpretation here. Just the same, I reviewed the script to confirm this take on the events of
Insurrection, and there are several points which support it.
PERIM: Command wants to know our ETA at the Goren system.
PICARD: The Goren system?
RIKER: They need us to mediate some territorial dispute.
PICARD: Oh no! We can't delay the archaeological expedition to Hanoran Two. That'll put us right in the middle of monsoon season.
Picard may have been sidelined with less important duties in
First Contact due to the
Sovereign starship being relatively untested and factory new (combined, perhaps, with a lack of surety in Picard himself when it came to the influence of the Borg), but he still expressed a desire to be where he could make a difference and protect the lives of Federation citizens. Here, assigned diplomatic duties, his concern is not for the Starfleet officers who might be losing their lives (as they would be if the war were still on), but for the unfavorable conditions it will cause when he gets to the archaeological dig on Hanoran II late.
This is telling, in and of itself, but Riker than goes on to provide absolute proof that the Dominion War has recently ended.
RIKER: The diplomatic corps is busy with Dominion negotiations.
PICARD: Oh, so they need us to put out one more brush fire. Can anyone remember when we used to be explorers?
Riker states in no uncertain terms that Starfleet is negotiating peace with the Dominion, which could only mean the war has ended. And Jean-Luc confirms this a few moments later when he refers to the losses suffered in the Dominion War in the past tense.
PICARD: In view of our losses to the Borg and the Dominion, the Council feels we need all the allies we can get these days.
The Son'a were mentioned once on
Deep Space Nine, in the episode "Penumbra," in a conversation between Damar and Weyoun.
DAMAR: The Defiant is returning to Federation space. I'm ordering our ships to pursue.
WEYOUN: No. Divert them to the So'na outpost on Devos Two.
DAMAR: Why?
WEYOUN: We need their to help protect the new Ketracel white facility. The Federation has been made aware of its location.
This episode aired for the first time approximately four months after
Insurrection was released in theaters, which is the only indication I can find that the war might have been intended to be ongoing during the film. Everything in the film itself, however, indicates that the war must have just ended, that what we see is the aftermath of a devastating conflict, one from which the Federation is still attempting to recover (leading to the uncharacteristic behavior from Admiral Dougherty and his cohorts.)
I have to assume that this was just a matter of poor timing. The events of the film itself do not support an ongoing war, and the only thing which does are the respective release dates of each story. That is not enough, in my opinion, to ignore everything implied by the actual production.