911事件之后，联合国安理会通过的1373号决议，呼吁各国拒绝为恐怖分子提供安全避难，依法惩处任何与恐怖主义有关联的人，查禁恐怖主义集团的招募，堵住恐怖主义分子获得武器的各种途径，并与其他政府和国际组织一同追踪恐怖主义嫌疑犯并加强安全。
UN Security Council Resolution 1373, passed after the September 11 attacks, calls on states to deny safe haven to terrorists, bring to justice anyone associated with terrorism, suppress recruitment by terrorist groups, block terrorists’ efforts to acquire weapons, and cooperate with other governments and international organizations in tracking suspects and boosting security.