Edward Stourton profiles the Commander of Egypt's Armed Forces, General Abdul Fattah al-Sisi, now the most powerful man in Egypt. General al-Sisi was appointed Defence Minister and Head of the Army by President Morsi in August 2012, and he was thought by many to be sympathetic to the Muslim Brotherhood.
But he was instrumental in Morsi's downfall in July and oversaw the subsequent violent suppression of Muslim Brotherhood supporters.
His former teacher from the US Army War College is among those who tell us more about this elusive former military intelligence chief.
Producer: Helena Merriman.