The Venetians were very uneasy when Charles passed so near, and they trembled lest, when he was once master of Naples, he might conceive the idea of conquering the rest of Italy.

Ludovico Sforza, on his side, was beginning to tremble, seeing the rapidity with which the King of France had dethroned the house of Aragon, lest he might not make much difference between his allies and his enemies.

Maximilian, for his part, was only seeking an occasion to break the temporary peace which he had granted for the sake of the concession made to him.

Lastly, Ferdinand and Isabella were allies of the dethroned house.

And so it came about that all of them, for different reasons, felt a common fear, and were soon in agreement as to the necessity of driving out Charles VIII, not only from Naples, but from Italy, and pledged themselves to work together to this end, by every means in their power, by negotiations, by trickery, or by actual force.
The Florentines alone refused to take part in this general levy of arms, and remained faithful to their promises.
According to the articles of the treaty agreed upon by the confederates, the alliance was to last for five-and-twenty years, and had for ostensible object the upholding of the majority of the pope, and the interests of Christendom; and these preparations might well have been taken for such as would precede a crusade against the Turks, if Bajazet's ambassador had not always been present at the deliberations, although the Christian princes could not have dared for very shame to admit the, sultan by name into their league.