The French ambassadors were furious.  Boississe had arrived not simply as friend of the Advocate, but to assure the States of the strong desire entertained by the French government to cultivate warmest relations with them.  It had been desired by the Contra-Remonstrant party that deputies from the Protestant churches of France should participate in the Synod, and the French king had been much assailed by the Catholic powers for listening to those suggestions.  The Papal nuncius, the Spanish ambassador, the envoy of the Archduke, had made a great disturbance at court concerning the mission of Boississe.  They urged with earnestness that his Majesty was acting against the sentiments of Spain, Rome, and the whole Catholic Church, and that he ought not to assist with his counsel those heretics who were quarrelling among themselves over points in their heretical religion and wishing to destroy each other.

Notwithstanding this outcry the weather was smooth enough until the proceedings of Aerssens came to stir up a tempest at the French court.  A special courier came from Boississe, a meeting of the whole council, although it was Sunday, was instantly called, and the reply of the States-General to the remonstrance of the Ambassador in the Aerssens affair was pronounced to be so great an affront to the King that, but for overpowering reasons, diplomatic intercourse would have at once been suspended.  “Now instead of friendship there is great anger here,” said Langerac.  The king forbade under vigorous penalties the departure of any French theologians to take part in the Synod, although the royal consent had nearly been given.  The government complained that no justice was done in the Netherlands to the French nation, that leading personages there openly expressed contempt for the French alliance, denouncing the country as “Hispaniolized,” and declaring that all the council were regularly pensioned by Spain for the express purpose of keeping up the civil dissensions in the United Provinces.

Aerssens had publicly and officially declared that a majority of the French council since the death of Henry had declared the crown in its temporal as well as spiritual essence to be dependent on the Pope, and that the Spanish marriages had been made under express condition of the renunciation of the friendship and alliance of the States.

Such were among the first-fruits of the fall of Barneveld and the triumph of Aerssens, for it was he in reality who had won the victory, and he had gained it over both Stadholder and Advocate.  Who was to profit by the estrangement between the Republic and its powerful ally at a moment too when that great kingdom was at last beginning to emerge from the darkness and nothingness of many years, with the faint glimmering dawn of a new great policy?

Barneveld, whose masterful statesmanship, following out the traditions of William the Silent, had ever maintained through good and ill report cordial and beneficent relations between the two countries, had always comprehended, even as a great cardinal-minister was ere long to teach the world, that the permanent identification of France with Spain and the Roman League was unnatural and impossible.