This document discusses male circumcision as an HIV prevention strategy in South Africa. It provides evidence from clinical trials showing circumcision reduces HIV risk in men by 50-60%. Models estimate circumcision could prevent millions of new HIV infections in Africa. Circumcision may also reduce other STIs and penile cancers. While acceptability studies show over 50% of South Africans support circumcision, some sectors raise concerns about risks and commercialization. South Africa is now implementing male medical circumcision guidelines and integrating circumcision into its prevention strategy based on evidence and consultations, to help address the HIV prevention gap.