While thus the most important successes were gained towards the north, the king at the same time extended his dominions towards the east and the west. The Lesser Armenia was annexed by him and converted from a dependent principality into an integral part of the Pontic kingdom; but still more important was the close connection which he formed with the king of the Greater Armenia. He not only gave his daughter Cleopatra in marriage to Tigranes, but it was mainly through his support that Tigranes shook off the yoke of the Arsacids and took their place in Asia. An agreement seems to have been made between the two to the effect that Tigranes should take in hand to occupy Syria and the interior of Asia, and Mithradates Asia Minor and the coasts of the Black Sea, under promise of mutual support; and it was beyond doubt the more active and capable Mithradates who brought about this agreement with a view to cover his rear and to secure a powerful ally.

Paphlagonia and Cappadocia Acquired

Lastly, in Asia Minor the king turned his eyes towards the interior of Paphlagonia—the coast had for long belonged to the Pontic empire— and towards Cappadocia.(8) The former was claimed on the part of Pontus as having been bequeathed by the testament of the last of the Pylaemenids to king Mithradates Euergetes: against this, however, legitimate or illegitimate pretenders and the land itself protested. As to Cappadocia, the Pontic rulers had not forgotten that this country and Cappadocia on the sea had been formerly united, and continually cherished ideas of reunion. Paphlagonia was occupied by Mithradates in concert with Nicomedes king of Bithynia, with whom he shared the land. When the senate raised objections to this course, Mithradates yielded to its remonstrance, while Nicomedes equipped one of his sons with the name of Pylaemenes and under this title retained the country to himself. The policy of the allies adopted still worse expedients in Cappadocia. King Ariarathes VI was killed by Gordius, it was said by the orders, at any rate in the interest, of Ariarathes' brother-in-law Mithradates Eupator: his young son Ariarathes knew no means of meeting the encroachments of the king of Bithynia except the ambiguous help of his uncle, in return for which the latter then suggested to him that he should allow the murderer of his father, who had taken flight, to return to Cappadocia. This led to a rupture and to war; but when the two armies confronted each other ready for battle, the uncle requested a previous conference with the nephew and thereupon cut down the unarmed youth with his own hand. Gordius, the murderer of the father, then undertook the government by the directions of Mithradates; and although the indignant population rose against him and called the younger son of the last king to the throne, the latter was unable to offer any permanent resistance to the superior forces of Mithradates. The speedy death of the youth placed by the people on the throne gave to the Pontic king the greater liberty of action, because with that youth the Cappadocian royal house became extinct. A pseudo-Ariarathes was proclaimed as nominal regent, just as had been done in Paphlagonia; under whose name Gordius administered the kingdom as lieutenant of Mithradates.

Empire of Mithradates

Mightier than any native monarch for many a day had been, Mithradates bore rule alike over the northern and the southern shores of the Black Sea and far into the interior of Asia Minor. The resources of the king for war by land and by sea seemed immeasurable. His recruiting field stretched from the mouth of the Danube to the Caucasus and the Caspian Sea; Thracians, Scythians, Sauromatae, Bastarnae, Colchians, Iberians (in the modern Georgia) crowded under his banners; above all he recruited his war-hosts from the brave Bastarnae. For his fleet the satrapy of Colchis supplied him with the most excellent timber, which was floated down from the Caucasus, besides flax, hemp, pitch, and wax; pilots and officers were hired in Phoenicia and Syria. The king, it was said, had marched into Cappadocia with 600 scythe-chariots, 10,000 horse, 80,000 foot; and he had by no means mustered for this war all his resources. In the absence of any Roman or other naval power worth mentioning, the Pontic fleet, with Sinope and the ports of the Crimea as its rallying points, had exclusive command of the Black Sea.

The Romans and Mithradates
Intervention of the Senate

That the Roman senate asserted its general policy—of keeping down the states more or less dependent on it—also in dealing with that of Pontus, is shown by its attitude on occasion of the succession to the throne after the sudden death of Mithradates V. From the boy in minority who followed him there was taken away Great Phrygia, which had been conferred on his father for his taking part in the war against Aristonicus or rather for his good money,(9) and this region was added to the territory immediately subject to Rome.(10) But, after this boy had at length attained majority, the same senate showed utter passiveness towards his aggressions on all sides and towards the formation of this imposing power, the development of which occupies perhaps a period of twenty years. It was passive, while one of its dependent states became developed into a great military power, having at command more than a hundred thousand armed men; while the ruler of that state entered into the closest connection with the new great-king of the east, who was placed partly by his aid at the head of the states in the interior of Asia; while he annexed the neighbouring Asiatic kingdoms and principalities under pretexts which sounded almost like a mockery of the ill-informed and far-distant protecting power; while, in fine, he even established himself in Europe and ruled as king over the Tauric peninsula, and as lord-protector almost to the Macedono-Thracian frontier. These circumstances indeed formed the subject of discussion in the senate; but when the illustrious corporation consoled itself in the affair of the Paphlagonian succession with the fact that Nicomedes appealed to his pseudo-Pylaemenes, it was evidently not so much deceived as grateful for any pretext which spared it from serious interference. Meanwhile the complaints became daily more numerous and more urgent. The princes of the Tauric Scythians, whom Mithradates had driven from the Crimea, turned for help to Rome; those of the senators who at all reflected on the traditional maxims of Roman policy could not but recollect that formerly, under circumstances so wholly different, the crossing of king Antiochus to Europe and the occupation of the Thracian Chersonese by his troops had become the signal for the Asiatic war,(11) and could not but see that the occupation of the Tauric Chersonese by the Pontic king ought still less to be tolerated now. The scale was at last turned by the practical reunion of the kingdom of Cappadocia, respecting which, moreover, Nicomedes of Bithynia— who on his part had hoped to gain possession of Cappadocia by another pseudo-Ariarathes, and now saw that the Pontic pretender excluded his own—would hardly fail to urge the Roman government to intervention. The senate resolved that Mithradates should reinstate the Scythian princes—so far were they driven out of the track of right policy by their negligent style of government, that instead of supporting the Hellenes against the barbarians they had now on the contrary to support the Scythians against those who were half their countrymen. Paphlagonia was declared independent, and the pseudo- Pylaemenes of Nicomedes was directed to evacuate the country. In like manner the pseudo-Ariarathes of Mithradates was to retire from Cappadocia, and, as the representatives of the country refused the freedom proffered to it, a king was once more to be appointed by free popular election.

Sulla Sent to Cappadocia

The decrees sounded energetic enough; only it was an error, that instead of sending an army they directed the governor of Cilicia, Lucius Sulla, with the handful of troops whom he commanded there against the pirates and robbers, to intervene in Cappadocia. Fortunately the remembrance of the former energy of the Romans defended their interests in the east better than their present government did, and the energy and dexterity of the governor supplied what the senate lacked in both respects. Mithradates kept back and contented himself with inducing Tigranes the great-king of Armenia, who held a more free position with reference to the Romans than he did, to send troops to Cappadocia. Sulla quickly collected his forces and the contingents of the Asiatic allies, crossed the Taurus, and drove the governor Gordius along with his Armenian auxiliaries out of Cappadocia. This proved effectual. Mithradates yielded on all points; Gordius had to assume the blame of the Cappadocian troubles, and the pseudo-Ariarathes disappeared; the election of king, which the Pontic faction had vainly attempted to direct towards Gordius, fell on the respected Cappadocian Ariobarzanes.

First Contact between the Romans and the Parthians