Hosni Mubarak ordered to stand trial on charges of negligence for failing to halt the killing of peaceful protesters during the revolution. These trials began on 3 August 2011. On 2 June 2012, an Egyptian court sentenced Mubarak to life imprisonment. After sentencing, he was reported to have suffered a series of health crises. On 13 January 2013, Egypt's Court of Cassation (the nation's high court of appeal) overturned Mubarak's sentence and ordered a retrial. On retrial, Mubarak and his sons were convicted on 9 May 2015 of corruption and given prison sentences. Mubarak was detained in a military hospital and his
Muslim Brotherhood in Egypt more radical Qutb-inspired Islamist groups blossomed, and after Sadat signed a peace agreement with Israel in 1979, the Muslim Brotherhood became confirmed enemies of Sadat. Sadat was assassinated by a violent Islamist group Tanzim al-Jihad on 6 October 1981, shortly after he had Brotherhood leaders (and many other opposition leaders) arrested. Again with a new president, (Hosni Mubarak), Brotherhood leaders (Supreme Guide Umar al-Tilmisani and others) were released from prison. Mubarak cracked down hard against radical Islamists but offered an "olive branch" to the more moderate Brethren. The brethren reciprocated, going so far as to endorse Mubarak's candidacy for president