As their cities marked the 74th anniversary of the U.S. atomic bombings, the mayors of Hiroshima and Nagasaki this week used their annual peace declarations to raise pressure on the Japanese government to join a U.N. treaty banning nuclear weapons.Some experts said their words reflected the frustration of local people at the government's reluctance to make proactive efforts toward a nuclear-weapon-free world amid concern that a new arms race could develop among major nuclear powers.The Treaty on the Prohibition of Nuclear Weapons was passed in July 2017 with the support of 122 nations, but …READ FULL ARTICLE