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The United States has neither the intention nor need to renew nuclear testing, yet its failure to ratify the CTBT undermines both the credibility of U.S. leadership and the ability of the United States to improve the detection and deterrence of testing by others.

The modest, verifiable reductions set out in New START do not raise hard questions about the adequacy of the U.S. deterrent. Instead, ratifying the treaty is integral to the Obama administration's overall security agenda and very much in the U.S. national interest.

The 2010 NPT Review Conference is not a make-or-break moment for the nonproliferation regime. Countries should realize that they each have an opportunity to create positive momentum for further strengthening the regime after the Review Conference.

Insisting on the establishment a Nuclear-Weapons-Free Zone in the Middle East is unrealistic and creates counterproductive expectations. A Nuclear-Test-Free Zone, however, would be a step in the right direction.