of Pontus). The rulers of Cappadocia and Galatia, Ariobarzanes III and Deiotarus respectively, appealed to Calvinus for protection and soon the Roman forces sought battle with Pharnaces II. They met at the Battle of Nicopolis in eastern Anatolia, where Pharnaces II defeated the Roman army and overran much of Cappadocia, Pontus, and Bithynia. After the defeating the Ptolemaic forces at the Battle of the Nile, Caesar left Egypt in 47 BC and travelled through Syria, Cilicia, and Cappadocia to face Pharnaces II. As Pharnaces II gained word of Caesar's approach with his veteran army, he sent envoys to seek a peace, which Caesar refused. Caesar met Pharnaces II at the Battle of Zela, decisively defeating the Pontic king and reassessing Roman dominance over Asia Minor. Upon his return to the Bosporan Kingdom, Pharnaces II was assassinated by his son-in-law Asander. In return, Caesar named Asander as the kingdom's new Roman client king. Caesar then incorporated Lesser Armenia into Cappadocia to serve as a buffer from Rome's interests in Asia Minor against future Eastern aggression. Caesar was assassinated on March 15, 44 BC, by the members of the Roman Senate, Marcus Junius Brutus and Gaius Cassius Longinus chief among them. The "Liberators" then fled from Italy, assuming command of the Republic's eastern provinces and the eastern client kingdoms, including Cappadocia, in 43 BC. When Ariobarzanes III objected to the level of Roman intervention into his kingdom, Cassius had him executed and installed his younger brother Ariarathes X upon the Cappadocian throne in 42 BC. Later that year, following the defeat of Brutus and Cassius by the Second Triumvirate at the Battle of Philippi, Triumvir Mark Antony assumed command of the Eastern provinces and client kingdoms. In 36 BC, Antony executed Ariarathes X and installed Archelaus as the new Cappadocian client king. The Second Triumvirate expired in 33 BC, ending Antony's legal right to govern the Eastern half of the Republic. With the Triumvirate lapsed, the struggle for dominance between Antony and Octavian intensified. As Octavian built up his support in the West, Antony drew ever closer to Egyptian Queen Cleopatra. When Octavian declared war on Egypt, Antony, supported by the Eastern client kingdoms (including Cappadocia), went to Egypt's aid against Octavian. Octavian's victory over Antony at the Battle of Actium in 31 BC ensured Octavian's position as undisputed master of the Roman world. Traveling through Asia Minor and the Levant from