President Muhammadu Buhari on Sunday in Malta said that violent extremism and terrorism could only thrive and endure if good people remained idle and complacent.
A statement by his Senior Special Assistant on Media and Publicity, Mr Garba Shehu, said Buhari spoke on behalf of other participating African Heads of State and Government at the closing Executive Session of the 2015 Commonwealth Summit.
Buhari said that he was confident that terrorism would be ultimately defeated with greater international cooperation and collaboration.
"We have had the opportunity to discuss, in a serene atmosphere, wide ranging issues that are of great significance, not only to the members of the Commonwealth, but to the entire global community.
"Of particular note is the Action Statement on Climate Change, which is expected to herald our commitment to saving the planet for present and future generations.
"Of equal significance are our deliberations on Radicalisation and Violent Extremism. We are witnesses to the growing phenomenon of terrorism that is affecting us all, whether big or small.
"The reign of terror will only succeed if peace-loving people choose to remain idle. But I am confident that through our collective efforts, we will defeat this scourge and restore peace," Buhari said.