After the assassination of Julius Caesar and the formation of the Triumvirate under Octavian, Mark Antony, and Lepidus, Antony took control of the eastern provinces, where he met Cleopatra, queen of Egypt and formerly Caesar's lover. Cleopatra captured Antony's heart and slowly distanced him from Rome and its culture. The tension between Antony and Octavian steadily grew. Antony announced the termination of the alliance with Octavian and even divorced his sister, Octavia. Antony was declared a traitor, and in 31 BCE a decisive naval battle took place off the coast of Actium in Greece, in which Antony and Cleopatra's fleet was destroyed by Octavian's under the command of Agrippa. Antony committed suicide, and Cleopatra followed suit a few days later. The two were buried together.