Visit to Vienna during the first Preparatory Committee Meeting for the 2015 NPT Review Conference (May 2012)
The 8th Executive Conference of Mayors for Peace in Granollers, Spain and the Opening of an Exhibition about the Atomic Bombings and Disarmament in the United Nations Office at Geneva (November 2011)
Visit to Buenos Aires and Mar del Plata, Argentina (October 2010)
Visiting Volgograd, Moscow and neighboring cities in Russia (September 2010)
Participation in the 8th NPT Review Conference (May 2010)
Visiting Nicaragua and the 78th Winter Meeting of the U.S. Conference of Mayors (January 2010)
Participation in the 62nd Annual DPI/NGO Conference (September 2009)
Participation in the third meeting of International Commission on Nuclear Non-proliferation and Disarmament (ICNND) (June 2009)
US Conference of Mayors (USCM) 77th Annual Meeting (June 2009)
Participation in the 2009 NPT PrepCom: Third Preparatory Committee meeting for the 2010 Nuclear Non-Proliferation Treaty Review Conference (May 2009)
2020 Vision Campaign Association Board Meeting and other activities in Belgium, Germany and Luxembourg (November 2008)
Submission of some of the collected signatures for the CANT petition to the President of the UN General Assembly (October 27, 2008)
Orizuru Night Game was held in conjunction with the 2020 Vision Campaign (August 26 2008)
Attending the 2008 NPT (Nuclear Non-Proliferation Treaty) Preparatory Committee (May 2008)
Appeal activities in Scandinavia for the abolition of nuclear weapons (November 2007)Copenhagen(Denmark) Stockholm(Sweden)
Attending the "World Peace Forum" and the "2nd UCLG World Congress (October 2007)
Attending the 50th anniversary commemorative workshop of Pugwash Conference (July 2007)
Attending the 2007 NPT (Nuclear Non-Proliferation Treaty) Preparatory Committee(May 2007)
Attending the 70th Anniversary of the Bombing of Gernika (April 2007)
Attended the 7th World Summit of Nobel Peace Laureates (November 2006)
Mayors for Peace in Northern Europe(September 2006)
ICJ 10th Anniversary Commemorative Events (July 2006)
The 6th General Conference of Mayors for Peace, Commemorating the 60th Anniversary of the Atomic Bombings (August 4-6, 2005)
Attended the 7th NPT Review Conference (May 2005)