*The Armenian problem, 51–67 A. D.* In 51 A. D. an able and ambitious ruler, Vologases, came to the Parthian throne. He soon found a chance to set his brother Tiridates on the throne of Armenia and was able to maintain him there until the death of Claudius. However, at the accession of Nero, Caius Domitius Corbulo was sent to Cappadocia to reassert the Roman suzerainty over Armenia. At first Vologases abandoned Armenia, owing to a revolt in Parthia, but in 58 A. D. Tiridates reappeared on the scene and war broke out. In two campaigns Corbulo was able to occupy the country and set up a Roman nominee as the Armenian king (60 A. D.). It was not long before the latter was driven out by Vologases, who succeeded in surrounding a Roman force under Caesennius Paetus, the new commander in Cappadocia, and forcing him to purchase his safety by concluding an agreement favorable to the Parthian (62 A. D.). The situation was saved by Corbulo, then legate of Syria, who was finally entrusted with the sole command of operations and forced Vologases to meet the Roman terms (63 A. D.). Tiridates retained the Armenian throne, but acknowledged the Roman overlordship by coming to Rome to receive his crown from Nero’s hands. *The revolt in Britain, 60 A. D.* Under Claudius the Romans had extended their dominion in Britain as far north as the Humber, and westwards to Cornwall and Wales. In 59 A. D. Suetonius Paulinus occupied the island of Mona (Anglesea), the chief seat of the religion of the Druids. While he was engaged in this undertaking a serious revolt broke out among the Iceni and Trinovantes, who lived between the Wash and the Thames. It was caused by the severity of the Roman administration and in particular the ill-treatment of Boudicca, the queen of the Iceni, who headed the insurrection, by Roman procurators. The Roman towns of Camulodunum (Colchester), Verulamium (St. Alban’s), and Londinium (London) were destroyed, and 70,000 Romans were said to have been massacred. A Roman legion was defeated in battle and it was not until Paulinus returned and united the scattered Roman forces that the insurgents were checked. The Britons were decisively defeated and Boudicca committed suicide.