In this op-ed for the New York Times, former MTA Executive Director James Walsh and MTA Faculty Affiliate John S. Park argue that, though American diplomats should be proud of the new sanctions on North Korea that the United Nations Security Council passed last week, the key to stopping North Korea's weapons program is completely dismantling the private Chinese firms that help import illicit goods, through cooperation between the United States and China.

Testimony given by James Walsh for the Subcommittee on International Security, Proliferation and Federal Services, Committee on Government Affairs, U.S. Senate. Hearing on WMD, Februrary 12, 2002.

Fifty-five years ago this week, America dropped atomic bombs on Hiroshima and Nagasaki. So began the nuclear age.

It hasn't gone as the experts predicted. There have been no "limited" nuclear wars, and although nine nations did eventually acquire nuclear weapons, an additional 20 countries started down the nuclear path only to stop and reverse course. Today, the Nuclear Nonproliferation Treaty (NPT), the cornerstone of international efforts to prevent the spread of nuclear weapons, has more members than the United Nations.