Nigeria's leader Muhammadu Buhari on Saturday congratulated Joe Biden on his election as US President, calling for "greater engagement with Africa". "Your election is a significant reminder that democracy is the best form of government because it offers the people the opportunity to change their government by peaceful means," the leader of Africa's most populous nation said in a statement. "The most powerful group are not the politicians, but voters who can decide the fate of candidates for elective office at the polling booth." Buhari said he looked forward to "enhanced cooperation between Nigeria and the United States, especially at economic, diplomatic and political levels, including especially on the war against terrorism". The Nigerian leader also called on Biden "to promote greater engagement with Africa on the basis of reciprocal respects and common interests." del/har