sentences:  During the negotiations the most contentious point was the possession of the Danubian fortresses, especially Golubac and Smederevo, which the Ottomans wished to retain.However, on June 12, 1444, after three days of discussion, the treaty was hastily completed because İbrahim II of Karaman had invaded Murad's lands in Anatolia.The final terms stated that Murad would return 24 Serbian cities, including the large fortresses of Golubac and Smederevo, to the exiled Branković.