■Does New START limit America’s options for missile defense? Yes. For the first time, we would agree to an interrelationship between strategic offensive weapons and missile defense. Moreover, Russia already asserts that the document would constitute a binding limit on our missile defense program. But the WikiLeaks revelation last weekend that North Korea has supplied Iran with long-range Russian missiles confirms that robust missile defense is urgent and indispensable.

■Is the treaty’s compliance verification program inadequate? Yes. In a break from prior treaties, we would no longer be allowed to witness the destruction of Russian mobile ICBMs and launchers. Further, the prior provision for continuous on-site inspection of the principal Russian missile factory would be eliminated. And our verification inspectors would only be permitted to view Russia’s officially declared facilities — undeclared sites are available for treaty violations.