With him he indeed communicated almost daily through the medium of Aerssens, who was in constant receipt of most elaborate instructions from Barneveld, but he wished to confer with him face to face, so that there would be no necessity of delay in sending back for instructions, limitations, and explanation. No man knew better than the King did that so far as foreign affairs were concerned the States-General were simply Barneveld.
On the 22nd January the States’ ambassador had a long and secret interview with the King.’ He informed him that the Prince of Anhalt had been assured by Barneveld that the possessory princes would be fully supported in their position by the States, and that the special deputies of Archduke Albert, whose presence at the Hague made Henry uneasy, as he regarded them as perpetual spies, had been dismissed. Henry expressed his gratification. They are there, he said, entirely in the interest of Leopold, who has just received 500,000 crowns from the King of Spain, and is to have that sum annually, and they are only sent to watch all your proceedings in regard to Cleve.
The King then fervently pressed the Ambassador to urge Barneveld’s coming to Paris with the least possible delay. He signified his delight with Barneveld’s answer to Anhalt, who thus fortified would be able to do good service at the assembly at Hall. He had expected nothing else from Barneveld’s sagacity, from his appreciation of the needs of Christendom, and from his affection for himself. He told the Ambassador that he was anxiously waiting for the Advocate in order to consult with him as to all the details of the war. The affair of Cleve, he said, was too special a cause. A more universal one was wanted. The King preferred to begin with Luxemburg, attacking Charlemont or Namur, while the States ought at the same time to besiege Venlo, with the intention afterwards of uniting with the King in laying siege to Maestricht.
He was strong enough, he said, against all the world, but he still preferred to invite all princes interested to join him in putting down the ambitious and growing power of Spain. Cleve was a plausible pretext, but the true cause, he said, should be found in the general safety of Christendom.
Boississe had been sent to the German princes to ascertain whether and to what extent they would assist the King. He supposed that once they found him engaged in actual warfare in Luxemburg, they would get rid of their jealousy and panic fears of him and his designs. He expected them to furnish at least as large a force as he would supply as a contingent.
For it was understood that Anhalt as generalissimo of the German forces would command a certain contingent of French troops, while the main army of the King would be led by himself in person.
Henry expressed the conviction that the King of Spain would be taken by surprise finding himself attacked in three places and by three armies at once, he believing that the King of France was entirely devoted to his pleasures and altogether too old for warlike pursuits, while the States, just emerging from the misery of their long and cruel conflict, would be surely unwilling to plunge headlong into a great and bloody war.