[FreedomFerret]

I believe a very stern letter will be required.

[M203M4]

Yes, the letter must be stern, erring toward excessive punctuation if necessary. A wine and cheese should also be convened at the UN, where interpretive dance-art will be employed to properly share with the world the full richness of our emotional pain.

If that fails, we will block the North Korean importation of caviar, Segways, and Renaissance art.

[BulletBobCo]

I believe a very stern letter will be required.

Instead of a stern letter, I prefer a bow shot.

[CRBDeuce]

I believe a very stern letter will be required.

A stern letter MAY work, but in this instance a more satisfying delivery would be launched over the bow.