Last month, the United Nations reached an agreement to ban nuclear weapons. Now world leaders are trying to convince countries to do the same.
On Sunday, Prime Minister Shinzo Abe, called for global cooperation to end nuclear weapons at a annual ceremony at Hiroshima Peace Memorial Park.
Representatives from 80 nations, gathered to attend the event. The ceremony marked the 72 year anniversary of the United States dropping an atomic bomb on Hiroshima that killed nearly 140,00 people.
"For us to truly realize a world without nuclear weapons, the participation of both nuclear weapon states and non-nuclear weapon states is necessary," he said.
Later on, U.N. Secretary General António Guterres issued a statement on Sunday calling for the United States and other nuclear-armed countries to do more to rid the world of nuclear weapons.
"(O)ur dream of a world free of nuclear weapons remains far from reality. The states possessing nuclear weapons have a special responsibility to undertake concrete and irreversible steps in nuclear disarmament,"he said.
"We live in challenging times. The continued presence of some 15,000 nuclear weapons -- along with dangerous rhetoric regarding their use -- exacerbates these threats,"Guterres continued." Global vision requires a global effort – and I thank the people of Hiroshima for continuing to spread your message of peace and hope."