As the demand increased, the Chinese merchants raised the price of raw silk; and the Persians, unwilling that the Chinese should be the only ones to profit, increased the rcsale price more than was equable. Then our merchants, unable to make any profit by buying at this rate, decided to deal direct with the Chinese, if possible, by reopening an old trade-route passing to the north of the Persian territories, beyond the Caspian Sea: this long but practical route entered our territory through a narrow pass of the Caucasus mountains, to the cast of the Black Sea and at the boundary of Colchis, a rich land friendly to us. It was to Colchis that Jason of old went in company with the Argonauts to fetch back the Golden Fleece; which was, I think, a parable of Eastern riches brought by this northern route. In deciding to reopen it, our merchants were aware that they must pay toll to the savage Huns through whose territory it passed, but hoped that they would be satisfied with less money than the Persians. The nearest and most powerful of these tribes were the White Huns, so called because they were European in appearance, unlike the other Huns, who seem to us a sort of evil yellow animal. They lived between the Caspian and the Black Seas and were inveterate enemies of the Persians. A timely gift to these White Huns to persuade them to attack Persia from the north had more than once saved our frontiers from serious invasion.
But the merchants' plan failed. The Persians heard of it and persuaded the Chinese to deal only with themselves. Then King Kobad wrote sarcastically to the Emperor Anastasius that the White Huns had now made him responsible for the toll that the Romans had promised to pay them for the use of the northern route. If Anastasius still wished to buy silk, he must therefore first lend the Persian Government money with which to appease the disappointed Huns. Anastasius, of course, refused this demand with indignation, so Kobad invaded Roman Armenia with a small but well-trained army, besieging the important city of Amida on the Upper Tigris. Anastasius despatched an army of 52,000 men to its relief, entrusting its command, however, not to a single worthless general, as was customary, but to several worthless generals of equal rank — who constantly opposed one another's plans and could not agree on any single point. This huge force was therefore beaten, division by division, in several pitched engagements; and some parts of it fled without daring to come to grips at all. Our name thus won such discredit in the East that had Kobad not been distracted by a Hunnish invasion from the north — Anastasius had bought the services of the White Huns by paying the promised toll twice over- he would doubtless have attempted to overrun all Syria and Asia Minor, and doubtless would have succeeded. He had already taken Amida after a long siege, owing to the negligence of certain Armenian monks, supposed to be on sentry duty 3t one of the towers, who had eaten and drunk too generously after a long fast and fallen asleep: the Persians crept into this tower by an old underground passage that they had discovered and slaughtered the monks, every one. At the assault Kobad himself showed great energy for a man of sixty years. Mounting a scaling-ladder, sword in hand, he threatened to run any Persian through who turned back. It is said that the Persian Mages had dissuaded him from raising the siege, as he had intended to do when it grew wearisome, because of a sign: a group of prostitutes on the walls had taunted the Persians by lifting up their skirts at them, exclaiming, 'Come in and enjoy yourselves.' The Mages interpreted this as a sign that the city would soon reveal her secrets to them; and the discovery of the hidden passage proved them right. Kobad, returning to give battle to the White Huns, left a garrison of a thousand men behind at Amida, who succeeded in holding the city against the Roman relief-force and only consented to evacuate it, two years after its capture, on payment of 70,000 gold pieces.
Peace was concluded for seven years between Anastasius and Kobad, but continued much longer, because Anastasius was too weak and Kobad too preoccupied to continue the struggle. But two hostile acts were committed, one by each side. Kobad seized the Caspian Gates, the pass through the Caucasus through which our caravans were to have gone in search of silk; and Anastasius fortified the open city of Daras, close to the Persian frontier and commanding the main road joining the two countries.
To give an explanation of what these acts signified. The Caspian Gates are of great strategical importance. They are the only practical pass through the lofty and terrible Caucasus range, which acts as a barrier for many hundreds of miles between the broad Asiatic steppes, where the nomad Huns roam, and our civilized world. Alexander the Great had been the first to appreciate fully the importance of this pass, which is seven miles long and begins, at the end nearest to us, with a natural door, set in precipitous cliffs, that can be defended by a small garrison. He built a castle there, and it has been held by many different princes in the last eight or nine hundred years. The present constable was a Christianized Hun, whose grazing-lands on this side of the mountain the castle protected against the heathen Huns on the other.
This constable felt death approaching and, being able to place little reliance on the good sense or courage of his sons, wrote to Anastasius, who had shown him many marks of favour, and offered to sell him the castle and the pass for a few thousand gold pieces. Anastasius called his principal Senators together and asked them for their opinion on the matter, which they gave as follows: 'The Caspian Gates would have been of great commercial importance to Your Sacred Majesty, had you been able to use the northern caravan-route for direct trade with China; but as this has been denied you by Persian intrigue there is no profit to be derived from them. Your Majesty will realize that the present constable, or his sons, will continue to hold the fortress without any inducement from you, merely to restrain raiders from the steppes from overrunning their own country. Moreover, to post a Roman garrison there would be both dangerous and expensive: for the Caspian Gates are situated two hundred miles beyond the eastern end of the Black Sea, and more than that distance from the Diocese of Pontus, which is the nearest of Your Clemency's personal dominions on the southern shores of that Sea: the Persian satrapy of Iberia lies between. We therefore advise Your Greatness to thank this Hun most courteously and to send him a worthy gift, but not to throw good money after bad; the Eastern frontier has already cost the Empire too dear.'