UN honours Kofi Annan

NEW YORK - Flags at United Nations buildings are flying at half-mast following the death of former Secretary-General Kofi Annan.

The Nobel Peace Prize laureate passed away in a Swiss hospital at the age of 80 after a brief illness.

Flags will be flown at half-mast for three days.

READ: The Elders mourn chairperson, Kofi Annan

Annan served as the seventh UN chief for almost 10 years and was awarded the Nobel prize in 2001.

Messages of condolences are still pouring in from across the world.

Vasu Gounden, Executive Director of the African Centre for the Constructive Resolution of Disputes, said Annan's defiance of world powers is part of his legacy.

Gounden said Annan's opposition to the Iraq war would go down in history as one of those events where a UN secretary-general defied the major powers of the world and stood on principle.