In this Monday, Oct. 1, 2018, file photo, Nigerian President Muhammadu Buhari waves to the crowd during the 58th anniversary celebrations of Nigerian independence, in Abuja, Nigeria. The United States and European Union are expressing concern after Nigeria's president suspended the country's chief justice on Friday, Jan. 25, 2019, three weeks before the presidential election, with the U.S. warning it could "cast a pall" over the vote. (AP Photo/Olamikan Gbemiga, File)
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