LIBERIA'S President Joseph Boakai has commissioned an audit of three key government institutions, including the central bank, as part of efforts to tackle graft, the presidency said. Boakai, who defeated his predecessor George Weah in the November elections, won on the promise to tackle corruption and improve livelihoods in the West African nation. The anti-corruption push included an audit of the former government. In a statement on Thursday, the presidency said Boakai had asked Liberia's General Auditing Commission to carry out an audit of the central bank, the national security agency and the executive protection service. The inspection will focus…