But interdiction of ships and planes on high seas, in the air or on land as advocated by PSI, is regarded as lack of international law basis.

• 但防扩散安全倡议主张的在国际公海及空中和陆地对船只和飞机等进行的拦截行动缺乏足够的国际法依据 ,引起颇多争议和有关国家的高度关注。