Mohamed Ghannouchi and from 1999 to 2011 he was the Prime Minister of Tunisia, making him the longest serving prime minister since the proclamation of independence, surpassing his predecessor Hamed Karoui. After the fall of President Zine El Abidine Ben Ali on 14 January 2011 in the wake of the 2010–2011 Tunisian uprising, he was the self-proclaimed acting President of the country for a few hours starting on 14 January 2011, under Article 56 of the Constitution of Tunisia. He remained Prime Minister for six weeks before stepping down. In a 2006 diplomatic cable from the United States that was leaked by
Ridha Grira Banque Tuniso-Libyenne. He took on the role of General Secretary of the Government. On January 16, 1992, he was assigned the position of General Secretary of Foreign Affairs Ministry. On April 22, 1999, he was chosen as Minister of State Properties and Land Affairs. On 14 January 2010, he became the Minister of National Defense. After the ousting of the Tunisian President Zine El Abidine Ben Ali during the revolution of 2011, Ridha Grira was reappointed by Prime Minister Mohamed Ghannouchi to his position within the « national unity government » formed by Mohamed Ghannouchi. This government was strongly opposed