66 BCE
Catiline accused of conspiring against the Roman Republic with Autronius and the younger Sulla (also in 63 BC during the consulship of Cicero). Battle of the Lycus: Pompey the Great decisively defeats Mithridates VI, effectively ending the Third Mithridatic War. The lex Manilia, supported by Cicero gives Pompey command over all of Asia.
Geopolitics & Diplomacy
- The alliance between Mithridates VI of Pontus and Tigranes II of Armenia is broken.source
Conflict & Security
- Battle of the Lycus: Pompey the Great decisively defeats Mithridates VI, effectively ending the Third Mithridatic War.source
- Tigranes II is forced to surrender, by a payment of 6,000 talents, and is reinstated by Pompey as a "friend of the Roman people" to hold Armenia as a buffer zone.source
- The lex Manilia, supported by Cicero gives Pompey command over all of Asia.source
Exploration & Expansion
- Consuls: Manius Aemilius Lepidus and Lucius Volcatius Tullus.source
Religion & Belief
- Catiline accused of conspiring against the Roman Republic with Autronius and the younger Sulla (also in 63 BC during the consulship of Cicero).source
- Aristobulus II becomes king and high priest of Judea, until 63 BC.source
- Cicero becomes praetor in Rome.source
- Gaius Antonius elected Roman praetor.source
Births
- Octavia (the Younger), grandniece of Julius Caesar (d. 11 BC)source
Deaths
- Licinius Macer, Roman annalistsource