This week John Kerry became to first U.S. Secretary of State to visit Hiroshima, Japan. Almost 70 years after the United States dropped an atomic bomb on the city, Kerry visited the Hiroshima Peace Park and attended a memorial service. Although he did not apologize for the United States’ decision to drop the bomb, Kerry did speak about the horror and devastation of nuclear weapons. He also called for world leaders to work together for peace. As secretary of state, Kerry is President Barack Obama’s lead advisor for U.S. relationships with other countries.