In 1481 Mohammed II. died, and was succeeded by his son Bayazet. Iskender Pasha, Beglerbeg of Servia, then ravaged Dalmatia, with the excuse that on the death of the Sultan all the treaties made by him were invalid unless renewed by his successor. Venice at once sent ambassadors to obtain their renewal, but the negotiations proved difficult, and lasted over a year. Ragusa was more fortunate; all her privileges were confirmed, and the tribute reduced to 3000 ducats.[424] In 1483 Bayazet determined to complete the conquest of the Herzegovina, and sent a large force to invade it under one Gjursević Beg, a Bosnian renegade. This time the task proved easier, as the succession of raids had broken the back of the Herzegovinians’ resistance. Vlatko fled from Castelnuovo to Ragusa, and thence to Hungary. This so incensed the Turks that they again threatened to seize the city, but the Republic appeased them by a gift of 12,500 ducats to the Sultan and 500 to his Ministers as a bribe, while it agreed to pay an additional 100 a year to Aliza, the newly-appointed Sandjakbeg of the Herzegovina. It is said that Aliza had already come to an understanding with the commander of the Hungarian guard in Ragusa to enter the town, but the Senate discovered the plot in time, and had the traitor strangled, together with two accomplices.[425] A Ragusan citizen named G. Niccolò Palmotta was put to death for intriguing with the Turks at Castelnuovo. With the conquest of the Herzegovina Ragusa’s relations with the Turks became more intimate. The whole of Bosnia, save Jajce and the surrounding district, the Herzegovina, all Albania excepting a few Venetian towns, parts of Croatia, Slavonia, and Hungary were in Turkish hands. Dalmatia as far as the Narenta’s mouth was still Venetian, and so was Cattaro, although a strip of the coast of the Bocche, including Castelnuovo, was held by the Turks. Ragusa’s land frontier was thus encompassed on all sides by the Infidel save in the north, where the marshy delta of the Narenta divided it from Venetian territory. Hungary was weak on her southern border, and much occupied with the German wars in the north; but although Ragusa could hope for little help in that quarter, she kept on good terms with the King, and continued to furnish him with information as to the movements of the enemy, and to pay him the tribute of 500 ducats at irregular intervals. This she did partly for commercial reasons, the Hungarian trade being still important, and partly because she hoped that the cause of Christendom in the Western Balkans might yet triumph under Hungarian auspices.