And it is rather odd that they got a pacist Vulcan who's one of Starfleet's best and brightest to go along with a plan to start a war.
Since when have Vulcans been pacifists? Spock specifically was the fiercest warhawk aboard Kirk's ship - say, the foremost proponent of firing at the enemy and starting a war in "Balance of Terror".
Surak himself, or Spock's dream version of him, expressed some sentiments that might be considered pacifist in "Savage Curtain". They need not be interpreted that way, though.
And it is rather odd that they got a pacist Vulcan who's one of Starfleet's best and brightest to go along with a plan to start a war.
Makes good sense on two levels.
1) The Feds have always wanted to be rid of the Klingon threat. Yet for the past century or so, the war has been a cold one. Clearly, nobody has believed in the "we can clean their chronometers" boasting - until now. What changed? The Klingons didn't get weaker yet - that would only happen if the Feds waited and hoped the Klingons would shift their resources from combat to environmentalism...
But if the Romulans promised to join the UFP side (or at least not join the Klingon one), the balance would be disturbed for the very first time. The least the Feds could do in such a case would be to allow the Romulans to listen in on negotiations of strategy.
2) Romulans have cloaking devices. Getting Kirk out of Khitomer (or the planet where the trial was held) would probably require a cloaking device. And the Klingons aren't donating any.
Timo Saloniemi