Why not have certain influential merchants in Anvil doing life hell for the Reddies? Hiring pirates, bribing the crew to take the ship and leave, keep Sentinelian ships in the Anvil harbour forever by getting them caught in beaurocracy? That stuff. The Sentinelian king asked the Count of Anvil to stop these merchants from destroying the Sentinelian trade, however the Count of Anvil is happy to give the Sentinelians a headache. He is also afraid what it will cost him to remove the merchants. Assasination attempts, trade going bad, outlanders taking over... No more bribes (?).
Sentinel then gives an ultimatium:
Stop the influential merchants from destroying Sentinelian trade (this would basically mean stripping them off their power in different ways)
OR
Get attacked by the Reddies who are sick and tired, and tired and sick of the Anvilians plotting against them. Payback time.
Anvil refuses.
War is declared.
The Elven Dominion joins in on the side of the Reddies.
Then this RP decides.
Whaddyathink? I may join, not sure.