Complex sentence: He accepts the mission, thinking that he will finally be recognized and finish his career by being promoted to Police Commissioner is assigned to escort Dr. Iqbal Ansari to Mumbai as the leader of the Police Chief's team.
Split into simpler sentences: He accepts the mission, thinking that he will finally be recognized and finish his career by being promoted to Police Commissioner. He's assigned to escort Dr. Iqbal Ansari to Mumbai as the leader of the Police Chief's team.