Egypt's President Mohamed Morsi appointed on Sunday Abdel Fatah el Seisy as defense minister and chief of the supreme council of the armed forces, presidential spokesman Yasser Ali announced.
Tantawi and Chief of Staff of the armed forces Sami Enan were ordered to retire, with Sediqi Sobhi appointed as new chief of staff. Both Tantawi and Enan were appointed as advisers to the president.
Former judge Mahmoud Mahmoud Mohammed Mekki was appointed as vice president.
The President also issued a new constitutional declaration and cancelled the supplementary declaration issued in mid-June by the army.
According to the new declaration, if the constituent assembly could not achieve its work in 15 days, the president should form a new one which represents all the society spectra, after consulting all the national movements to prepare a constitution draft within three months of its formation.
The draft has to be put on referendum within 30 days after finishing it. And legislative procedures will begin in two months after the people's approval of the new constitution.