Duguid also said the need for a missile-defense system would diminish if efforts by the United States, Russia and other major powers to dissuade Iran from developing nuclear weapons can show success.

• 杜吉德还说，假如美国、俄罗斯等主要国家阻止伊朗发展核武器的努力能够取得成功，那么建立导弹防御系统的必要性就会减小。