In a series of tweets posted on June 1, 2021, Buhari threatened to treat Nigerians from the eastern part of the country in the language they understand, in a reference to Nigerias 1967-1970 civil war against the secessionist Republic of Biafra, in southeastern Nigeria.
Kwenye mfululizo wa twiti zilizochapishwa mnamo June 1, 2021, Buhari anatishia kuwashughulikia Wanaijeria wanaotoka kwenye sehemu ya mashariki ya nchi hiyo kwa kutumia lugha wanayoielewa, akirejea vita vya wenyewe kwa wenyewe nchini Naijeria kati ya mwaka 1967-1970 dhidi ya vuguvugu la kujitenga la Jamhuri ya Biafra, kusini mashariki mwa Naijeria.