2010年11月以来美欧合作一直稳步推进，北约在当时召开的里斯本峰会上决定建设导弹防御系统，以保护所有北约欧洲民众、领土和军队。
Steady progress has been made since November 2010, when, at its Lisbon summit, NATO decided to develop a missile-defense capability to protect all NATO European populations, territory, and forces.