While he was occupied with the conquest of Kuhistan, and the extirpation of the Assassins, Hulaku received a letter from Ibn Alkami, who promised to deliver into his hands, the bulwarks and treasure of the khalif city; and magnifying the charms of the capture, he studiously depreciated the dangers of the attempt, till they disappeared. The khan, however, did not blindly trust the traitor’s promises; the former unsuccessful attempts upon Bagdad were too fresh in his memory. Churmaghun, the general of Jenghis Khan, had, during the reign of the Khalif Nassir-ledinillah, twice advanced against Bagdad, with an army of a hundred and twenty-four thousand men; and twice was he beaten back, with the loss of the greater part of his forces. Hulaku had recourse to Nassireddin, his vizier, and, through him, to the stars; in which the latter naturally read the overthrow of the khalifat, so long determined upon by his revengeful spirit. Ibn Alkami’s divining-rod struck on the deeply-concealed vein of Nassireddin’s inveterate rancour, and treachery responded to revenge. In accordance with Nassireddin’s counsels, Hulaku, as soon as he reached Hamadan, sent the before-mentioned embassy to the khalif, whom he requested to send to meet him, one of the two secretaries of state, the chief cup-bearer, or the commander of the army, with whose opposition to his views he was fully acquainted. The khalif sent the learned orator, Ibn-al-jusi, who poured the oil of his eloquence into the fire of wrath, and returned, without performing his task. Hulaku, still more enraged, commanded the Emir Sogranjan to advance to Erdebil, and cross the Tigris, and then to form a junction with the troops of the Emir Boyanje, on the western side of Bagdad. In the meanwhile, he himself broke up his head-quarters at Hamadan. On the news of the advance of the Mongol vanguard reaching Bagdad, the khalif despatched Fetheddin, one of his oldest and most experienced commanders, with the secretary of state, Mujeheddin, one of his young favourites, and a thousand cavalry, armed with lances, who, in the first action, beat the Mongols, and forced them to retreat.