As long as atomic bombs exist, a disaster is inevitable, the head of the International Campaign to Abolish Nuclear Weapons, the winner of this year’s Nobel Peace Prize, said on Saturday.

“We are facing a clear choice right now: The end of nuclear weapons or the end of us,” Beatrice Fihn told a news conference at the Norwegian Nobel Committee.

“An impulsive tantrum, a calculated military escalation, a terrorist or cyberattack or a complete accident - we will see the use of nuclear weapons unless they are eliminated,” she warned.

"These weapons do not make us safe, they are not a deterrent, they only spur other states to pursue their own nuclear weapons. And if you are not comfortable with Kim Jong-un having nuclear weapons, then you are not comfortable with nuclear weapons. If you’re not comfortable with Donald Trump having nuclear weapons, then you are not comfortable with nuclear weapons,” Ms Fihn said.

ICAN, which brings together more than 450 organisations, was a driving force behind an international treaty on banning nuclear weapons that was passed this year. So far, 53 countries have signed up, but only three have ratified it - the treaty needs ratification by 50 to go into effect.

No nuclear power has signed the treaty. Three major nuclear powers - the US, Britain and France - have said they will not send their ambassadors to Sunday’s Nobel prize-awarding ceremony in the Norwegian capital.

In pictures: 70th anniversary of atomic bombing of Hiroshima Show all 15 1 /15 In pictures: 70th anniversary of atomic bombing of Hiroshima In pictures: 70th anniversary of atomic bombing of Hiroshima Japan Japanese Prime Minister Shinzo Abe (C) leaves the cenotaph after delivering his speech during the memorial ceremony marking the 70th anniversary of the atomic bombing at Hiroshima Peace Memorial Peace Park in Hiroshima In pictures: 70th anniversary of atomic bombing of Hiroshima Japan People crowd as they pray for victims in front of the cenotaph for the victims of the 1945 atomic bombing, at Peace Memorial Park in Hiroshima In pictures: 70th anniversary of atomic bombing of Hiroshima Japan Doves are released as a sign of peace during the Hiroshima Peace Memorial Ceremony at the Hiroshima Peace Memorial Park on the day of the 70th anniversary of the atomic bombing of Hiroshima In pictures: 70th anniversary of atomic bombing of Hiroshima Japan Boys and girls offer flower bouquets on an altar during the 70th memorial service for the A-bomb victims at the Peace Memorial Park in Hiroshima In pictures: 70th anniversary of atomic bombing of Hiroshima Japan People offer prayers before a memorial monument during the 70th memorial service for the A-bomb victims at the Peace Memorial Park in Hiroshima In pictures: 70th anniversary of atomic bombing of Hiroshima Japan A girl (R) offers a prayer for victims of the atomic bombing during World War II in 1945, in front of a cenotaph at Hiroshima Peace Memorial Park In pictures: 70th anniversary of atomic bombing of Hiroshima Japan Representatives of bereaved families of victims killed by the atomic bombing strike the Peace Bell for a moment of silence for the victims during the peace memorial ceremony marking the 70th anniversary of the nuclear bombing of the city at Hiroshima Peace Memorial Park in Hiroshima In pictures: 70th anniversary of atomic bombing of Hiroshima Japan Attendees place flowers for victims killed by the atomic bombing during the peace memorial ceremony marking the 70th anniversary of the nuclear bombing of the city at Hiroshima Peace Memorial Park in Hiroshima In pictures: 70th anniversary of atomic bombing of Hiroshima Japan Representatives of A-bomb survivors carry a wreath to lay for victims killed by the atomic bombing at a cenotaph during the peace memorial ceremony marking the 70th anniversary of the nuclear bombing of the city at Hiroshima Peace Memorial Park in Hiroshima In pictures: 70th anniversary of atomic bombing of Hiroshima Japan Doves fly over the Hiroshima Peace Memorial Park during a memorial ceremony to mark the 70th anniversary of the atomic bombing of Hiroshima In pictures: 70th anniversary of atomic bombing of Hiroshima Japan Visitors pray for the atomic bomb victims in front of the cenotaph at the Hiroshima Peace Memorial Park in Hiroshima In pictures: 70th anniversary of atomic bombing of Hiroshima Japan People are seen visiting the Atomic Bomb Dome at the Hiroshima Peace Memorial Park In pictures: 70th anniversary of atomic bombing of Hiroshima Japan Local residents hold paper lanterns in front of the Atomic Bomb Dome during a procession commemorating the victims of the atomic bombing in Hiroshima, western Japan. Japan will mark the 70th anniversary of the attack on Hiroshima, where the U.S. dropped an atomic bomb on August 6, 1945, killing about 140,000 by the end of the year in a city of 350,000 residents In pictures: 70th anniversary of atomic bombing of Hiroshima USA Dr. Jimmy Hara (R) from the Physicians for Social Responsibility and Buddhist Monk Ryuzen Hayashi (L) pray during the 'Never Again - Hiroshima and Nagasaki 70th Anniversary Commemoration' vigil and moment of silence at the Chain Reaction Peace Sculpture showing a atomic bomb mushroom cloud in Santa Monica, California In pictures: 70th anniversary of atomic bombing of Hiroshima USA 86-year old Hiroshima survivor, Juni Sarashina (R) prays during the 'Never Again - Hiroshima and Nagasaki 70th Anniversary Commemoration' vigil and moment of silence at the Chain Reaction Peace Sculpture in Santa Monica, California

Satsuko Thurlow, a survivor of the Hiroshima atomic bombing who is to accept the prize along with Ms Fihn, said she was “not too surprised” at the diplomatic snub.

“This is not the first time they have behaved that way ... they tried in many different ways to sabotage, to discredit, what we tried to do,” she said. “Maybe this shows they are really annoyed at what success we have had so far.”

ICAN on Saturday installed 1,000 red paper cranes outside the Norwegian Parliament. The cranes were made by children in Hiroshima, site of the world’s first atomic bomb attack in 1945.