The Roman Senate declares Vespasian as Roman emperor, though he won't enter Rome to receive this personally until next year. Vespasian, at one time a general under Emperor Nero who has made a name for himself suppressing the revolt in Judaea, founds the Flavian dynasty, which will rule the Roman Empire for the next 25 years.
Emperor Nero committed suicide in June 68, and the struggle for power led to a quick succession of emperors and civil wars. Vespasian, preparing to lay siege to Jerusalem and put an end to the Jewish revolt, was proclaimed emperor by his soldiers in June 69. He quickly gains both political and military support in the East, allowing him to defeat Emperor Vitellius before he even sets foot in Italy.