You order the Treasurer to give them the silver they want. It's not much, considering the usual prices for dwarven services.
1165 AD, Late Autumn
Princess Ruberta arrives to marry Bjern! Her actualy beauty checks out with the advertisted one. Her bedchamber maidens, few guards and a matron arrive, along with Aes, brother of King Tetan I. No one else from Eldrican royal family shows up.
Along with usual gifts, there's also a caravan of silver. The Treasurer meets with you after you show the guests their quarters.
"The silver bullion brought by Eldricans could be chalked up to two years of treaty silver we were promised."
"So, fourteen years worth of silver left?" The Treasurer nods.
"Fourteen years left, sire."
The ceremony is a grand, but not extravagant one. For some reason, Bjern, who was enamored with tales about Ruberta, has definitely lost his enthusiasm towards her once he met her in person. Maybe he wished for someone even more beautiful, or talkative (as Ruberta is rather shy), but he does not run away from the altar and fulfills his duties to his new wife, the bedchamber maids report.
1165 AD, Winter
Silver and gold arrive in the Treasury, gemstones are sent north...
2to3
...and the glassware generates only modest profits.
The Spymaster meets with you, bringing news about Parsia.
"Your Majesty, King Shapur's illness has taken a turn for worse, and he is on his deathbed. His heir Dashir has gone missing, nobody have seen him for over a month. No doubt he was forced into hiding or outright murdered by Manipur who has taken control of the government. Manipur has talked to his courtiers about purging of heathens and reclaiming Parsian glory, and, according to my agents, the courtiers at Parsian palace cheered to these plans. I think it's definitely time for action, sire."
You decide to...
A) Strengthen garrisons in Ceodwell and Tiftit.
B) Ignore the situation for now.
C) Have Manipur quietly 'removed', if possible.
D) Reinforce the borders and try to get Manipur killed.