A former President of the United States of America (USA), Barack Obama has paid a tribute to the late Ghanaian diplomat, Kofi Annan, describing him as someone who “never stopped his pursuit of a better world.”

In a post on his Facebook, Mr Obama said: “Kofi Annan was a diplomat and humanitarian who embodied the mission of the United Nations like few others.”

He added, “His integrity, persistence, optimism, and sense of our common humanity always informed his outreach to the community of nations.”