Mohamed Hosni El-Sayed Mubarak, better known as Hosni Mubarak (born on May 4, 1928), is the fourth president of the Arab Republic of Egypt from October 14, 1981, until he stepped down on February 11, 2011. He assumed power in Egypt as President of the Republic, Supreme Commander of the Egyptian Armed Forces, and Chairman of the National Democratic Party after the assassination of President Anwar. Sadat on October 6, 1981. His reign (until his resignation in 2011) is considered the fourth longest reign in the Arab region - of those who are currently alive, after Sultan Qaboos bin Said, Sultan of Oman and Yemeni President Ali Abdullah Saleh and the longest among the kings and presidents of Egypt since Muhammad Ali Pasha .. As President of Egypt, he played a role in support of peace in the Arab world, and was known for his position in support of Palestinian-Israeli peace negotiations. He stepped down following the outbreak of the January 25 revolution on February 11, 2011.