It was initiated on a provisional basis by the Executive Cities of Mayors for Peace at their meeting in Manchester, UK, in October 2003.
Directly thereafter, an end to nuclear weapon acquisition and threats and, as soon as possible thereafter, a clampdown on all weapon-usable fissile materials 3.
Securely destroy all nuclear weapons by the 2020 NPT Review Conference Working with mayoral associations, City Halls and various civil society advisors and actors, the 2020 Vision Campaign is pushing internationally for signatures to the Cities Appeal, leading to the adoption of the Hiroshima-Nagasaki Protocol in 2010.
Since May 2008, the main focus of the work of the 2020 Vision Campaign has been the signature drive for the Cities Appeal in support of the Hiroshima-Nagasaki Protocol.
By signing the Cities Appeal, Mayors and elected local officials around the world are given the chance to get behind the Hiroshima-Nagasaki Protocol ahead of the formal and final presentation of the results of the international signature drive at the 2010 NPT Review Conference at the United Nations Headquarters in New York.