Louis,
Have you forgotten your role as a King in the service of the Holy Roman Church? Has your own vanity and ambition so blinded you to the threat faced by all those who profess the One True Faith? Your treachery has gained you and your dynasty infamy in the lands of Italy, lands in which the House of France was once much beloved. The Medici arms bear upon them the arms of the Valois as a testament to the love and friendship that once existed between our families and our people. You, by siding with the heretic and the insurrectionist, have forsaken that bond.
The Lord teaches us to forgive those who trespass against us, and in time I will also forgive you, for we are still brothers in the faith. Before that however, I will ensure that you are reminded of the consequences that those who stray for the true path must suffer. I will march my armies against your lands. I will despoil your vassal the Duchy of Montferrat, whose ruling family has for years conspired against me. I will storm your Cisalpine fortress at Cuneo. Then, my men and I will cross the Alps, into the heart of your kingdom and light a fire from Languedoc to the Île-de-France. Before this war ends I will hear you confess your sins and crimes against the Catholic Faith inside the Cathedral of Notre-Dame. Then I will take the capital of this so-called Dutch Republic, expel the heretics, and return it to the bosom of the Church.
You think your armies are powerful and that they will defeat us. You are wrong. You think your fortresses are stout and that they will stop us. You are wrong. You think your subjects, who I know are still good hearted despite the wickedness of their king, will rise up and molest us. You are wrong. Our blades are sharp. Our guns aim true. Our discipline is iron. Most importantly, God marches with us. You will learn your folly.
Francesco de Medici, Grand Duke of Tuscany, King of Naples, Soldier of the Church