The international public health establishment, still dominated by men, paid most attention to male circumcision. In fact, the publication of data indicating a clear protective effect of around 50% of this operation in relation to the risk of HIV/AIDS is wonderful news. Very good that WHO in its press statement also draws attention to the downside which could perhaps be oversimplified as: DON’T go and get circumcised in order to double your sexual contacts afterwards. For more general information about male circumcision, its origins, consequences, risks, benefits and how to do it, I recommend the Wikipedia article.
The purpose of FGM is in general to prevent sexual desire in girls thereby improving marital fidelity. I would consider it one example of the cruelty systematically inflicted by men on women in so many cultural settings. It is akin to burning of witches in Europe, honour killings, burning of widows in
 WHO Study Group on female genital mutilation and obstetric outcome (2006). Female genital mutilation and obstetric outcome: WHO collaborative study in six African countries. The Lancet 367, 1835-41