But the gaze of the Borgia was not bounded by the strait limits of a mere Italian Duchy. Whether indeed there mingled with personal ambition an ideal of a united Italy, swept clean of the barbarians, it is hard to say, though Machiavelli would have us believe it. What is certain is that he desired the supreme dominion in Italy for himself, and to win it spared neither force nor fraud nor the help of the very barbarians themselves. With a decree of divorce and a Cardinal's hat he gained the support of France, the French Duchy of Valentinois, and the sister of the King of Navarre to wife. By largesse of bribery and hollow promises he brought to his side the great families of Rome, his natural enemies, and the great Condottieri with their men-at-arms. When by their aid he had established and extended his government he mistrusted their good faith. With an infinity of fascination and cunning, without haste and without rest, he lured these leaders, almost more cunning than himself, to visit him as friends in his fortress of Sinigaglia. 'I doubt if they will be alive to-morrow morning,' wrote Machiavelli, who was on the spot. He was right. Cæsar caused them to be strangled the same night, while his father dealt equal measure to their colleagues and adherents in Rome. Thenceforth, distrusting mercenaries, he found and disciplined out of a mere rabble, a devoted army of his own, and having unobtrusively but completely extirpated the whole families of those whose thrones he had usurped, not only the present but the future seemed assured to him.