The two former secretary of states:
Comparable ambiguities apply to the one-year window for a presumed Iranian breakout. Emerging at a relatively late stage in the negotiation, this concept replaced the previous baseline—that Iran might be permitted a technical capacity compatible with a plausible civilian nuclear program. The new approach complicates verification and makes it more political because of the vagueness of the criteria.
Under the new approach, Iran permanently gives up none of its equipment, facilities or fissile product to achieve the proposed constraints. It only places them under temporary restriction and safeguard—amounting in many cases to a seal at the door of a depot or periodic visits by inspectors to declared sites. The physical magnitude of the effort is daunting. Is the International Atomic Energy Agency technically, and in terms of human resources, up to so complex and vast an assignment?
In a large country with multiple facilities and ample experience in nuclear concealment, violations will be inherently difficult to detect. Devising theoretical models of inspection is one thing. Enforcing compliance, week after week, despite competing international crises and domestic distractions, is another. Any report of a violation is likely to prompt debate over its significance—or even calls for new talks with Tehran to explore the issue. The experience of Iran’s work on a heavy-water reactor during the “interim agreement” period—when suspect activity was identified but played down in the interest of a positive negotiating atmosphere—is not encouraging.
Compounding the difficulty is the unlikelihood that breakout will be a clear-cut event. More likely it will occur, if it does, via the gradual accumulation of ambiguous evasions.
