In the fall of Alamut, the centre of the Assassins was gone; the props of their authority were broken, in the loss of the castles of Rudbar and Kuhistan. Still, the grand-prior of Syria refused submission to the grand-master’s orders to surrender,—the armies of the Mongols being, as yet, too distant to compel his obedience. A far greater object occupied the mind of Hulaku, than the destruction of a few Syrian mountain forts, in which the order, after the fall of Alamut, and the annihilation of the Ismailites in Persia, might yet, though with difficulty, raise its head. He entertained no less a project than the conquest of Bagdad, and the overthrow of the khalif’s throne, on which the Arabs had, in the prophet’s name, already, for six centuries and a half, ruled over the world of Islam. This great event is, not only by its immediate consequences, but also from its proximate cause, inseparably connected with the destruction of the Assassins.

In the second year after the fall of Alamut, and, consequently, before the conquest of Kirdkuh the last fortress of the Assassins, which only surrendered in the third year of the siege, Bagdad, the queen of the cities of the Tigris, fell. The overthrow of the khalifat, as we have seen, in the instructions given by Mangu to his brother Hulaku, did not enter immediately into the plan of the khan, who merely claimed submission and troops, but Nassireddin, the great savant and traitor, who had delivered the capital of the Assassins into the conqueror’s hands, and had paved a road to his own revenge, over its ruins, laboured unceasingly to urge Hulaku to the destruction of the khalifat. Besides the close connexion of this event with the one which we have described, it is in itself so great and important, in the history of Asia, and the middle ages,—so attractive, from the novelty and rarity of the subject, that we cannot deny our readers and ourselves the pleasure of following the khan, in his expedition from Alamut to Bagdad.

The siege and conquest of Constantinople, by the Turks, is, perhaps, the only event in history, worthy to be compared with that of Bagdad, by the Mongols; and the fall of the long-sinking Byzantine empire, may be placed by the side of that of the khalifat. The conquest of other cities, on whose sieges history has dwelt with astonishment and admiration, or with pity and terror, is less mighty in its consequences, because, under their ruins, no throne of universal sway has been buried. This interest is wanting, in the most obstinate and glorious sieges of ancient and modern history, however remarkable by the great names of the assailants, or the consummate skill with which they may have been prosecuted, or the patient courage with which they have been defended. Tyre and Saguntum, illustrious in their besiegers, Alexander and Hannibal; Syracuse, which has immortalized the names of Marcellus and Archimedes; Rhodes, twice attacked by Demetrius Poliorcetes, and defended against the Turks, by Villiers de l’Isle Adam; Candia, and Saragossa; have all earned unfading glory, by the lion courage of their inhabitants and defenders; but, although these cities fought for the highest of earthly objects—their country’s freedom, still their fall did not draw down with it the seat of the ancient dominion over half the world.

The history of the conquest of other celebrated cities, the seat of universal monarchy, such as Babylon and Persepolis, under whose ruin were buried the Assyrian and Persian monarchies, is wrapt in the distance of thousands of years, and impenetrable obscurity. The destruction of Jerusalem eclipses in the brightness of its lustre that of all those cities; not, however, on account of the importance of its power, or of its siege, for that by Khosroes was not less remarkable than that by Titus; but because the latter was described by Tacitus. If Gibbon had had access to the sources which are at our command, the conquest of Bagdad would not have shone with less splendour, in his immortal work, than that of Constantinople, nor would it have been so briefly treated. What we want of his power of expression, must be supplied by the richness of the material.

After the fall of Alamut, and the other fortresses of the Assassins, except that of Kirdkuh, Hulaku vacated the territory of Kaswin, and marched to Hamadan, whither his general, Tanju Nowian, hastened from Aserbijan, to lay an account of his victories at the foot of the throne. Hulaku dismissed him, with instructions to advance to Rum and Syria, and to subject the whole of Asia and Africa, to the extreme western boundary, to his dominion. In the month of Rebi-ul-ewel, in the 555th year of the Hegira, he commenced his march against Bagdad, and proceeded as far as Tebris, whence he sent an ambassador to the khalif, Mostassem, with the message: “When we went out against Rudbar, we sent ambassadors to thee, desiring aid; thou promisedst them, but sentest not a man. Now, we request that thou wouldst change thy conduct, and refrain from thy contumacy, which will only bring about the loss of thy empire and thy treasures.”

The ambassadors having despatched their mission to Mostassem, the latter sent the learned Sherefeddin Ibn Jusi, the most famous orator of his time, and Bedreddin Mohammed, of Nahjiwan, to Hulaku, with a haughty message. The khan, irritated at this, gave more easy audience to the counsels of Nassireddin, who continually urged him to march against Bagdad, and to the treacherous invitation of Ibn Alkami, the khalif’s vizier. Moyededdin Mohammed Ben Mohammed Ben Abdolmelek Alkami, who, as vizier, administered the affairs of the khalifat with unlimited power, and, by the blackest treachery, caused its fall, is stigmatized ignominiously, as traitor, throughout the whole east; and the name of Alkami is not less abhorred, in their history, than is that of Antalcides, in that of the Greeks: as eloquent, and versed in poetry and the polite literature of the Arabs, as Nassireddin was in the mathematical sciences, he was no less faithless to his lord. Both poet and mathematician were traitors.[264]

Nassireddin had personal cause of complaint against Alkami, who, by his censure, had occasioned the khalif’s throwing into the Tigris the poem dedicated to him by the former; adding, that it was, in every respect, badly written. It is probable, that Nassireddin was a better astronomer than poet; but it is still more probable, that Alkami was jealous of the credit which he might gain with the khalif. The vizier would not have deemed it necessary to warn the viceroy of Khorassan, Nassireddin Mohteshem, with whom the astronomer was, against a mediocre or bad Kasside, who was a juggler, and wished to insinuate himself into the favour of the khalif. Out of respect for Alkami, the viceroy, on this warning, threw the astronomer into prison, notwithstanding he had dedicated his great work, Akhlaki Nassiri, to him. He escaped to Alamut, where, as vizier of the last grand-master, he, meditating revenge against Alkami and the Khalif Mostassem, laid the foundation of it in the ruin of the Assassins.

Ibn Alkami, like Nassireddin, swore vengeance against the khalif: he had to complain, not only of the neglect of some of the grandees and favourites being unpunished by Mostassem, but also, he feared for his own personal security, on account of some severe measures against the Shiites, to which sect he himself belonged. He entered, therefore, on the same path of treachery, in which Nassireddin had already preceded him, and besieged the ear of Hulaku, with complaints and invitations, which were readily accepted. Nassireddin, Hulaku’s vizier, and Ibn Alkami, the khalif’s, played mutually into each other’s hands. The contemporaneous fall of two such powerful sovereignties, as that of the Assassins and of the khalifat, caused by the jealousy and treachery of an astronomer and a wit, is unique in history.[265]

Ere we commence the detail of the fall of the khalif throne of Bagdad, it will be proper to premise a few words, relating to the foundation and splendour of this renowned city.

Bagdad, the city, valley, or house of peace, the citadel of the holy, the seat of the khalifat, called also the oblique,[266] from the oblique position of its gates, was founded, on the banks of the Tigris, in the 148th year of the Hegira, by Abujafer Almansur, the second khalif of the Abbas family. It stretches two miles along the eastern banks of the river, in the form of a bow with an arrow on the string, and is surrounded by a brick wall, whose circumference of twelve thousand four hundred ells, is interrupted by four gates and one hundred and sixty-three turrets. When Mansur resolved upon building the city, he called his astronomers, at whose head was his vizier, Nevbakht (i. e. new fortune), to determine a fortunate hour for laying the foundations; and the latter chose a moment when the sun stood in the sign Sagittarius, by which the new city was promised flourishing civilization, numerous population, and long endurance. At the same time he assured the khalif, that neither he, nor any of his successors, would die within the walls of this capital; and the confidence of the astronomer, in the truth of his prophecy, is less surprising than its fulfilment by thirty-seven khalifs, the last of whom, Mostassem, during whose reign Bagdad fell, did not die within its walls, but at Samara, a place built below Bagdad, on the banks of the Tigris, by Motassem, the eighth Abbaside khalif (called the eighther from the coincidence of the number eight, in his nativity) for his Mameluke guard.[267]