Freetown - Sierra Leone's president carried out the biggest cabinet reshuffle of his nine-year tenure on Monday, firing four ministers and his army chief as he tries to reverse waning public support for his party.President Ernest Bai Koroma appointed new interior and finance ministers and brought opposition leader Mohamed Bangura across the divide to install him as information minister.Former finance minister Kaifala Marah will now head up Sierra Leone's central bank, swapping places with bank governor Momodu Kargbo who takes up the economic portfolio in government.Koroma's new minister for tourism, Sidi Yahya Tunis, was formerly spokesperson for the country's National Ebola Response Centre during the latest outbreak.All cabinet appointments are subject to parliamentary approval.In total, 13 ministers were either fired or moved jobs.Sierra Leone's cabinet will now contain four female ministers in the environment, culture, social welfare and fisheries posts, compared with just one previously. Koroma also replaced head of the armed forces Lieutenant General Samuel Omar Williams with the army chief's deputy.New ambassadors to Iran, China, the United Nations and United States were also named.The reshuffle has been widely welcomed by the general public and is seen as an attempt by the government to ready his All People's Congress party for elections in two years time."Koroma realised that the ruling party's image was waning and needed a boost so that's why he has made such a radical sweep. It is now clear that the president wants more productivity from his ministers," said Sierra Leonean political analyst Sorie Kargbo.The president is barred under the constitution from standing again after two terms in power. He was elected for the first time in 2007.