Overview
The Herodian kingdom was a client state of the Roman Republic ruled from 37 to 4 BCE by Herod the Great, who was appointed "King of the Jews" by the Roman Senate. When Herod died, the kingdom was divided among his sons into the Herodian Tetrarchy.
Background
Roman involvement in the Levant
The first intervention of Rome in the region dates from 63 BCE, following the end of the Third Mithridatic War, when Rome created the province of Syria. After the defeat of Mithridates VI of Pontus, Pompey (Pompey the Great) sacked Jerusalem in 63 BCE. The Hasmonean Queen, Salome Alexandra, had recently died and her sons, Hyrcanus II and Aristobulus II, turned against each other in a civil war. In 63 BCE, Aristobulus was besieged in Jerusalem by his brother's armies. He sent an envoy to Marcus Aemilius Scaurus, Pompey's representative in the area. Aristobulus offered a massive bribe to be rescued, which Pompey promptly accepted. Afterwards, Aristobulus accused Scaurus of extortion. Since Scaurus was Pompey's brother-in-law and protégé, the general retaliated by putting Hyrcanus in charge of the kingdom as Prince and High Priest.
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