But it became clear that Chosroes, the Persian king, had made the truce with the Romans with treacherous intent, in order that he might find them remiss on account of the peace and inflict upon them some grave injury. For in the third year of the truce he devised the following schemes. There were in Persia two brothers, Phabrizus and Isdigousnas, both holding most important offices there and at the same time reckoned to be the basest of all the Persians, and having a great reputation for their cleverness and evil ways. Accordingly, since Chosroes had formed the purpose of capturing the city of Daras by a sudden stroke, and to move all the Colchians out of Lazica and establish in their place Persian settlers, he selected these two men to assist him in both undertakings. For it seemed to him that it would be a lucky stroke and a really important achievement to win for himself the land of Colchis and to have it in secure possession, reasoning that this would be advantageous to the Persian empire in many ways. In the first place they would have Iberia in security forever afterwards, since the Iberians would not have anyone with whom, if they revolted, they might find safety; for since the most notable men of these barbarians together with their king, Gourgenes, had looked towards revolt, as I have stated in the preceding pages,[24] the Persians from that time on did not permit them to set up a king over themselves, nor were the Iberians single-minded subjects of the Persians, but there was much suspicion and distrust between them. And it was evident that the Iberians were most thoroughly dissatisfied and that they would attempt a revolution shortly if they could only seize upon some favourable opportunity. Furthermore, the Persian empire would be forever free from plunder by the Huns who lived next to Lazica, and he would send them against the Roman domains more easily and readily, whenever he should so desire. For he considered that, as regards the barbarians dwelling in the Caucasus, Lazica was nothing else than a bulwark against them. But most of all he hoped that the subjugation of Lazica would afford this advantage to the Persians, that starting from there they might overrun with no trouble both by land and by sea the countries along the Euxine Sea, as it is called, and thus win over the Cappadocians and the Galatians and Bithynians who adjoin them, and capture Byzantium by a sudden assault with no one opposing them. For these reasons, then, Chosroes was anxious to gain possession of Lazica, but in the Lazi he had not the least confidence. For since the time when the Romans had withdrawn from Lazica, the common people of the country naturally found the Persian rule burdensome. For the Persians are beyond all other men singular in their ways, and they are excessively rigid as regards the routine of daily life. And their laws are difficult of access for all men, and their requirements quite unbearable. But in comparison with the Lazi the difference of their thinking and living shews itself in an altogether exceptional degree, since the Lazi are Christians of the most thorough-going kind, while all the Persian views regarding religion are the exact opposite of theirs. And apart from this, salt is produced nowhere in Lazica, nor indeed does grain grow there nor the vine nor any other good thing. But from the Romans along the coast everything is brought in to them by ship, and even so they do not pay gold to the traders, but hides and slaves and whatever else happens to be found there in great abundance; and when they were excluded from this trade, they were, as was to be expected, in a state of constant vexation. When, therefore, Chosroes perceived this, he was eager to anticipate with certainty any move on their part to revolt against him. And upon considering the matter, it seemed to him to be the most advantageous course to put Goubazes, the king of the Lazi, out of the way as quickly as possible, and to move the Lazi in a body out of the country, and then to colonize this land with Persians and certain other nations.
When Chosroes had matured these plans, he sent Isdigousnas to Byzantium, ostensibly to act as an envoy, and he picked out five hundred of the most valorous of the Persians and sent them with him, directing them to get inside the city of Daras, and to take their lodgings in many different houses, and at night to set these all on fire, and, while all the Romans were occupied with this fire, as was natural, to open the gates immediately, and receive the rest of the Persian army into the city. For word had been sent previously to the commander of the city of Nisibis to conceal a large force of soldiers near by and hold them in readiness. For in this way Chosroes thought that they would destroy all the Romans with no trouble, and seizing the city of Daras, would hold it securely. But someone who knew well what was being arranged, a Roman who had come to the Persians as a deserter a little earlier, told everything to George, who was staying there at the time; now this was the same man whom I mentioned in the preceding pages[25] as having persuaded the Persians who were besieged in the fortress of Sisauranon to surrender themselves to the Romans. George therefore met this ambassador at the boundary line between Roman and Persian soil and said that this thing he was doing was not after the fashion of an embassy, and that never had so numerous a body of Persians stopped for the night in a city of the Romans. For he ought, he said, to have left behind all the rest in the town of Ammodios, and must himself enter the city of Daras with some few men. Now Isdigousnas was indignant and appeared to take it ill, because he had been insulted wrongfully, in spite of the fact that he was dispatched on an embassy to the Roman emperor. But George, paying no heed to him in his fury, saved the city for the Romans. For he received Isdigousnas into the city with only twenty men.
So having failed in this attempt, the barbarian came to Byzantium as if on an embassy, bringing with him his wife and two daughters (for this was his pretext for the crowd which had been gathered about him); but when he came before the emperor, he was unable to say anything great or small about any serious matter, although he wasted no less than ten months in Roman territory. However, he gave the emperor the gifts from Chosroes, as is customary, and a letter, in which Chosroes requested the Emperor Justinian to send word whether he was enjoying the best possible health. Nevertheless the Emperor Justinian received this Isdigousnas with more friendliness and treated him with greater honour than any of the other ambassadors of whom we know. So true was this that, whenever he entertained him, he caused Braducius, who followed him as interpreter, to recline with him on the couch, a thing which had never before happened in all time. For no one ever saw an interpreter become a table-companion of even one of the more humble officials, not to speak of a king. But he both received and dismissed this man in a style more splendid than that which befits an ambassador, although he had undertaken the embassy for no serious business, as I have said. For if anyone should count up the money expended and the gifts which Isdigousnas carried with him when he went away, he will find them amounting to more than ten centenaria of gold. So the plot against the city of Daras ended in this way for Chosroes.
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His first move against Lazica was as follows. He sent into the country a great amount of lumber suitable for the construction of ships, explaining to no one what his purpose was in so doing, but ostensibly he was sending it in order to set up engines of war on the fortifications of Petra. Next he chose out three hundred able warriors of the Persians, and sent them there under command of Phabrizus, whom I have lately mentioned, ordering him to make away with Goubazes as secretly as possible; as for the rest, he himself would take care. Now when this lumber had been conveyed to Lazica, it happened that it was struck suddenly by lightning and reduced to ashes. And Phabrizus, upon arriving in Lazica with the three hundred, began to contrive so that he might carry out the orders received by him from Chosroes regarding Goubazes. Now it happened that one of the men of note among the Colchians, Pharsanses by name, had quarrelled with Goubazes and in consequence had become exceedingly hostile to him, and now he did not dare at all to go into the presence of the king. When this was learned by Phabrizus, he summoned Pharsanses and in a conference with him disclosed the whole project, and enquired of the man in what way he ought to go about the execution of the deed. And it seemed best to them after deliberating together that Phabrizus should go into the city of Petra, and should summon Goubazes there, in order to announce to him what the king had decided concerning the interests of the Lazi. But Pharsanses secretly revealed to Goubazes what was being prepared. He, accordingly, did not come to Phabrizus at all, but began openly to plan a revolt. Then Phabrizus commanded the other Persians to attend as carefully as they could to the guarding of Petra, and to make everything as secure as possible against a siege, and he himself with the three hundred returned homeward without having accomplished his purpose. And Goubazes reported to the Emperor Justinian the condition in which they were, and begged him to grant forgiveness for what the Lazi had done in the past, and to come to their defence with all his strength, since they desired to be rid of the Median rule. For if left by themselves the Colchians would not be able to repel the power of the Persians.
When the Emperor Justinian heard this, he was overjoyed, and sent seven thousand men under the leadership of Dagisthaeus and a thousand Tzani to the assistance of the Lazi. And when this force reached the land of Colchis, they encamped together with Goubazes and the Lazi about the fortifications of Petra and commenced a siege. But since the Persians who were there made a most stalwart defence from the wall, it came about that much time was spent in the siege; for the Persians had put away an ample store of victuals in the town. And Chosroes, being greatly disturbed by these things, dispatched a great army of horse and foot against the besiegers, putting Mermeroes in command of them. And when Goubazes learned of this, he considered the matter together with Dagisthaeus and acted in the manner which I shall presently set forth.
The river Boas rises close to the territory of the Tzani among the Armenians who dwell around Pharangium. And at first its course inclines to the right for a great distance, and its stream is small and can be forded by anyone with no trouble as far as the place where the territory of the Iberians lies on the right, and the end of the Caucasus lies directly opposite. In that place many nations have their homes, and among them the Alani and Abasgi, who are Christians and friends of the Romans from of old; also the Zechi, and after them the Huns who bear the name Sabeiri. But when this river reaches the point which marks the termination of the Caucasus and of Iberia as well, there other waters also are added to it and it becomes much larger and from there flows on bearing the name of Phasis instead of Boas[26]; and it becomes a navigable stream as far as the so-called Euxine Sea into which it empties; and on either side of it lies Lazica. Now on the right of the stream particularly the whole country for a great distance is populated by the people of Lazica as far as the boundary of Iberia. For all the villages of the Lazi are here beyond the river, and towns have been built there from of old, among which are Archaeopolis, a very strong place, and Sebastopolis, and the fortress of Pitius, and Scanda and Sarapanis over against the boundary of Iberia. Moreover there are two cities of the greatest importance in that region, Rhodopolis and Mocheresis. But on the left of the river, while the country belongs to Lazica as far as one day's journey for an unencumbered traveller, the land is without human habitation. Adjoining this land is the home of the Romans who are called Pontic. Now it was in the territory of Lazica, in the part which was altogether uninhabited, that the Emperor Justinian founded the city of Petra in my own time. This was the place where John, surnamed Tzibus, established the monopoly, as I have told in the previous narrative,[27] and gave cause to the Lazi to revolt. And as one leaves the city of Petra going southward, the Roman territory commences immediately, and there are populous towns there, and one which bears the name of Rhizaeum, also Athens and certain others as far as Trapezus. Now when the Lazi brought in Chosroes, they crossed the River Boas and came to Petra keeping the Phasis on the right, because, as they said, they would thus provide against being compelled to spend much time and trouble in ferrying the men across the River Phasis, but in reality they did not wish to display their own homes to the Persians. And yet Lazica is everywhere difficult to traverse both to the right and to the left of the River Phasis. For there are on both sides of the river exceedingly high and jagged mountains, and as a result the passes are narrow and very long. (The Romans call the roads through such passes "clisurae" when they put their own word into a Greek form.[28]) But since at that time Lazica happened to be unguarded, the Persians had reached Petra very easily with the Lazi who were their guides.
But on this occasion Goubazes, upon learning of the advance of the Persians, directed Dagisthaeus to send some men to guard with all their strength the pass which is below the River Phasis, and he bade him not on any account to abandon the siege until they should be able to capture Petra and the Persians in it. He himself meanwhile with the whole Colchian army came to the frontier of Lazica, in order to devote all his strength to guarding the pass there. Now it happened that long before he had persuaded the Alani and Sabeiri to form an alliance with him, and they had agreed for three centenaria not merely to assist the Lazi in guarding the land from plunder, but also to render Iberia so destitute of men that not even the Persians would be able to come in from there in the future. And Goubazes had promised that the emperor would give them this money. So he reported the agreement to the Emperor Justinian and besought him to send this money for the barbarians and afford the Lazi some consolation in their great distress. He also stated that the treasury owed him his salary for ten years, for though he was assigned a post among the privy counsellors in the palace, he had received no payment from it since the time when Chosroes came into the land of Colchis. And the Emperor Justinian intended to fulfil this request, but some business came up to occupy his attention and he did not send the money at the proper time. So Goubazes was thus engaged.
But Dagisthaeus, being a rather young man and by no means competent to carry on a war against Persia, did not handle the situation properly. For while he ought to have sent certainly the greater part of the army to the pass, and perhaps should have assisted in person in this enterprise, he sent only one hundred men, just as if he were managing a matter of secondary importance. He himself, moreover, though besieging Petra with the whole army, accomplished nothing, although the enemy were few. For while they had been at the beginning not less than fifteen hundred, they had been shot at by Romans and Lazi in their fighting at the wall for a long time, and had made a display of valour such as no others known to us have made, so that many were falling constantly and they were reduced to an exceedingly small number. So while the Persians, plunged in despair and at a loss what to do, were remaining quiet, the Romans made a trench along the wall for a short space, and the circuit-wall at this point fell immediately. But it happened that inside this space there was a building which did not stand back at all from the circuit-wall, and this reached to the whole length of the fallen portion; thus, taking the place of the wall for the besieged, it rendered them secure none the less. But this was not sufficient greatly to disturb the Romans. For knowing well that by doing the same thing elsewhere they would capture the city with the greatest ease, they became still more hopeful than before. For this reason Dagisthaeus sent word to the emperor of what had come to pass, and proposed that prizes of victory should be in readiness for him, indicating what rewards the emperor should bestow upon himself and his brother; for he would capture Petra after no great time. So the Romans and the Tzani made a most vigorous assault upon the wall, but the Persians unexpectedly withstood them, although only a very few were left. And since the Romans were accomplishing nothing by assaulting the wall, they again turned to digging. And they went so far in this work that the foundations of the circuit-wall were no longer on solid ground, but stood for the most part over empty space, and, in the nature of things, would fall almost immediately. And if Dagisthaeus had been willing immediately to apply fire to the foundations, I think that the city would have been captured by them straightway; but, as it was, he was awaiting encouragement from the emperor, and so, always hesitating and wasting time, he remained inactive. Such, then, was the course of events in the Roman camp.
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