Political leaders must confront rising risks around nuclear weapons

Nobumasa Akiyama is dean of the School of International and Public Policy at Hitotsubashi University in Tokyo and author of "The Essentials of International Politics." He is also a member of the International Group of Eminent Persons for a World without Nuclear Weapons.

Amid an increasingly complex and deteriorating international security landscape, the importance of nuclear disarmament has never been more critical.