Nigeria is the largest and most populous country in West Africa, and has a long and complex history of relations with Cameroon, including a territorial dispute over the Bakassi peninsula
Chad is a landlocked country in Central Africa, and has a strategic partnership with Cameroon on security and trade issues, especially in combating the threat of Boko Haram
Central African Republic is a landlocked country in Central Africa, and has faced political instability and humanitarian crises for decades, prompting Cameroon to host thousands of refugees and peacekeepers
Equatorial Guinea is a small oil-rich country on the Atlantic coast of Central Africa, and has a close linguistic and cultural affinity with Cameroon, as both are part of the Francophonie and the Commonwealth of Nations
Gabon is a relatively stable and prosperous country on the Atlantic coast of Central Africa, and has a strong economic and diplomatic cooperation with Cameroon, especially in the areas of infrastructure, energy, and conservation