 2015 年期间，美国同 5 常其他国家一道举行了一系列技术专家会议，以讨论和确定 5 常国家在今后就《全面禁试条约》相关问题开展合作的领域。
• Through 2015, the United States, along with the rest of the P5, convened a series of meetings of technical experts to discuss and identify areas for future P5 collaboration on CTBT-related issues.