LAGOS, Shawwal 05, 1436, July 21, 2015, SPA -- Nigeria's new President Muhammadu Buhari has said in an opinion piece in The Washington Post that he will not appoint cabinet ministers until September, having taken office on May 29, Reuters reported. "Nigeria must first put new rules of conduct and good governance in place," wrote Buhari, in an article outlining his plan for defeating group Boko Haram and rooting out corruption. --SPA 13:02 LOCAL TIME 10:02 GMT www.spa.gov.sa/w