In 63 B.C., Syria was incorporated into the Roman Republic as a province following the success of Pompey the Great against the Parthians. In 135 A.D., after the defeat of the Bar Kokhba Revolt, Roman Syria and Judaea were merged into the province Syria Palaestina. The province Coele-Syria was split from Syria Palaestina in 193. Syria became part of the splinter Palmyrene Empire for a brief period from 260 to 272, when it was restored to Roman central authority. In the 3rd century, with the Severan dynasty, Syrians even achieved imperial power.