Helfand said he's not expecting the prize to make much of an impact on President Trump, who undermined his own secretary of state's efforts at diplomacy with North Korea.
"We need to be on the right side of history", Mr Wright said.
I hope our current president, who wondered aloud during the campaign what was the point of having nuclear weapons if you can never use them (although he added that he would be "the last person that wants to play the nuclear card") takes the hint. The ICJ concluded both that "the threat or use of nuclear weapons would generally be contrary to the rules of global law applicable in armed conflict, and in particular the principles and rules of humanitarian law" and that "states must never make civilians the object of attack and must consequently never use weapons that are incapable of distinguishing between civilian and military targets".
The award to the International Campaign to Abolish Nuclear Weapons (ICAN), follows the adoption in July of the Treaty on the Prohibition of Nuclear Weapons.
He is also engaged in a perilous game of brinksmanship with North Korea, threatening "fire and fury" and exchanging insults with young dictator Kim Jong Un. "Nuclear weapons are illegal", she said.
Peace Boat founder Tatsuya Yoshioka said the awarding of the prize to ICAN "has the same value as if it were given to every hibakusha". "We believe this is a good opportunity for the Japanese government to sign the treaty", Shii said. Over 120 countries, mostly countries from the global south, like Mexico, Brazil, South Africa, joined by some European countries, Austria, Ireland, were saying enough is enough.
But the advocates believe that the treaty creates an worldwide norm that will eventually pressure nuclear-armed countries into compliance, even if they never formally sign on, said Rebecca Johnson, executive director of Britain's Acronym Institute for Disarmament Diplomacy. It was launched internationally in Vienna in 2007.
Beatrice Fihn, left, executive director of the International Campaign to Abolish Nuclear Weapons (ICAN), Daniel Hogsta, centre, group co-ordinator, and Grethe Ostern, member of the steering committee, speak during a news conference after the Nobel Peace Prize announcement today. A total of 122 nations adopted the deal - but none of the nine known nuclear powers signed up. "If ever there were a moment for nations to declare their unequivocal opposition to nuclear weapons, that moment is now". Together, they promote adherence to and implementation of, the United Nations nuclear weapon ban treaty.
Separately, the older brother of Sadako Sasaki, who died of leukemia at age 12 a decade after the bombing of Hiroshima and whose mission to fold paper cranes made her an iconic figure, said the selection of ICAN for the prize had instilled him with a sense of pride.
The U.S. put special pressure to oppose the treaty on its allies in NATO, an alliance that depends at its core on a policy of nuclear deterrence - the threat of retaliation in kind for any nuclear attack by an enemy.
But just how illegal are nuclear weapons, and can anything prevent the world's superpowers from developing them?
Anti-nuclear campaigners say they recognize the challenge of persuading nuclear powers to agree to give up their weapons.