*formal polite greeting,* "I was drawn by your reputation as a professional asskicker. Now, sir, down to brass tacks. The Lion clan intends to march through my clan's lands on their way to fight you. Naturally we'll have eyes in every tree and shrub, so it might be prudent to work out a communications system so you can have information on Lion clan supply, order-of-battle, morale, and exact location days before they get close to your own border.
This is, of course, assuming they accept our limited offer of safe passage, which would put their supply lines in our hands, which we could... lean on, to hasten a cease-fire after you've bloodied them a bit. You've been killing Lions since before my birth, of course, so I'll defer to your judgment here.
In short, how can the Sparrow help you fight your war?