Leaders in the Public Service are guided by the values of integrity, service and excellence. The founding Prime Minister, Lee Kuan Yew, played a key role in several decisions that were difficult in the short term, but beneficial in the long term. For instance, he initially opposed the construction of casinos in Marina Bay Sands (MBS) and Resorts World Sentosa (RWS) because of the social problems of gambling that the casinos might cause.