Neither Gabon nor Togo has historical associations with the Commonwealth, as both countries gained independence from France in the 1960s.
Africa’s wetlands are constantly threatened by degradation, human invasion, pollution, and over-harvesting.
In April, Denmark and Rwanda began discussions about a procedure for transferring asylum seekers to the East African nation.
D’Tigers recorded a 20-0 points win over Mali who failed to show up for the game.
Nigeria, currently ranked first in Africa, will open its campaign against Cape Verde on Friday, before taking on Mali on Saturday.
Mr Buhari returned on Sunday after participating at the 26th Commonwealth Heads of Government Meeting in Kigali, Rwanda.
Some 23 million Nigerian children have received the seasonal malaria chemoprevention to reduce severe malaria.
Mr Buhari will also hold bilateral talks with some leaders from the Commonwealth countries.
The event which was held from June 9 to Saturday was in memory of those who lost their lives in the 1994 genocide against the Tutsi in Rwanda.
Nigeria, who had earlier defeated Brazil and Germany, would face two-time winner Uganda at the IPRC cricket oval on Sunday.
