"MBS" is an acronym commonly used to refer to Mohammed bin Salman. He is a prominent political figure from Saudi Arabia and currently serves as the Crown Prince of Saudi Arabia. Mohammed bin Salman is the son of King Salman bin Abdulaziz Al Saud and is considered one of the most influential figures in the country. He has played a key role in Saudi Arabia's economic and social reforms, including the Vision 2030 plan, which aims to diversify the country's economy and reduce its dependence on oil. However, it's important to note that political situations and individuals' roles can evolve over time, so it's recommended to refer to up-to-date sources for the latest information.