On Monday, Indonesian Foreign Minister Marty Natalegawa announced at the United Nations nuclear Non-Proliferation Treaty Review Conference that Indonesia will immediately begin work to ratify the Comprehensive Test Ban Treaty (CTBT). Indonesia’s laudable statement illustrates for the international community its strong commitment to reducing the global threat posed by nuclear weapons.

China now has a unique opportunity to show leadership by publicly committing to ratify the CTBT as soon as the US has done so.