Winter coming on, the duke deemed it advisable to retire into quarters, and appointed Piacenza for the forces of René, where, having passed the whole of the cold season of 1453, without attempting anything, the duke thought of taking the field, on the approach of spring, and stripping the Venetians of the remainder of their possessions by land, but was informed by the king that he was obliged of necessity to return to France. This determination was quite new and unexpected to the duke, and caused him the utmost concern; but though he immediately went to dissuade René from carrying it into effect, he was unable either by promises or entreaties to divert him from his purpose. He engaged, however, to leave part of his forces, and send his son for the service of the League. The Florentines were not displeased at this; for having recovered their territories and castles, they were no longer in fear of Alfonso, and on the other hand, they did not wish the duke to obtain any part of Lombardy but what belonged to him. René took his departure, and send his son John into Italy, according to his promise, who did not remain in Lombardy, but came direct to Florence, where he was received with the highest respect. The king's departure made the duke desirous of peace. The Venetians, Alfonso, and the Florentines, being all weary of the war, were similarly disposed; and the pope continued to wish it as much as ever; for during this year the Turkish emperor, Mohammed, had taken Constantinople and subdued the whole of Greece. This conquest alarmed the Christians, more especially the Venetians and the pope, who already began to fancy the Mohammedans at their doors. The pope therefore begged the Italian potentates to send ambassadors to himself, with authority to negotiate a general peace, with which all complied; but when the particular circumstances of each case came to be considered, many difficulties were found in the war of effecting it. King Alfonso required the Florentines to reimburse the expenses he had incurred in the war, and the Florentines demanded some compensation from him. The Venetians thought themselves entitled to Cremona from the duke; while he insisted upon the restoration of Bergamo, Brescia, and Crema; so that it seemed impossible to reconcile such conflicting claims. But what could not be effected by a number at Rome was easily managed at Milan and Venice by two; for while the matter was under discussion at Rome, the duke and the Venetians came to an arrangement on the ninth of April, 1454, by virtue of which, each party resumed what they possessed before the war, the duke being allowed to recover from the princes of Montferrat and Savoy the places they had taken. To the other Italian powers a month was allowed to ratify the treaty. The pope and the Florentines, and with them the Siennese and other minor powers, acceded to it within the time. Besides this, the Florentines, the Venetians, and the duke concluded