The prize was announced in a press conference in Oslo, Norway
The Nobel Peace Prize has been awarded to the International Campaign to Abolish Nuclear Weapons (Ican).
Berit Reiss-Andersen, the Nobel committee chair, said it was due to the group’s “groundbreaking efforts to achieve a treaty prohibition” on nuclear weapons.
“We live in a world where the risk of nuclear weapons being used is greater than it has been for a long time,” she continued.
She cited the North Korea issue.
Ms Reiss-Andersen called on nuclear-armed states to initiate negotiations to gradually eliminate the weapons.
How the prize is decided
Eligible nominators from around the world can put forward candidates up to 1 February of the award year, while Nobel Committee members have more time
All nominations are reviewed by the committee – whose five members are chosen by the Norwegian parliament – before a shortlist of 20-30 candidates are selected
A group of Norwegian and international advisers write individual reports on the shortlisted candidates. Using these and further reports, the committee narrows the selection down to a handful
A decision is reached in the last meeting of the committee, usually in late September or early October, before the prize is announced
If a unanimous decision cannot be reached, a simple majority vote is used
After the announcement, the award ceremony takes place on 10 December, the date of Alfred Nobel’s death
Why are Nobel laureates getting older?
Winners throughout the years