The group's Islamist ideology calls for punishments of amputations and public stonings for violations of Islamic law; their rule has been severe, prohibiting music and television, and the wearing of bras by women. Al-Shabab was also praised by Osama bin Laden prior to his death in May 2011. Its leaders have reputedly worked closely with terrorists of al-Qaeda in Yemen and Pakistan. It is thought to have harbored al-Qaeda terrorists responsible for the 1998 Kenya and Tanzania U.S. embassy bombings.