It is thus essential that countries have an effective and sustainable national USAR capability and a national crisis management system first, before developing an internationally-deployable capability, i.e. an IEC team.

因此，在发展国际部署能力（如 IEC 队伍）之前，各国首先要拥有一个有效的、可持续的国家 USAR 能力和全国性的危机管理系统，这是必不可少的。