Washington says the system is aimed at undermining missile strikes from countries such as Iran and North Korea.

VOA: standard.2009.03.25

But, at the mean time, of cource, we've seen nuclear proliferation in North Korea and now in Iran.

但是，同时，我们目睹了朝鲜的核扩散问题,现在伊朗也存在同样的问题。

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He warned that the West's pressure on Iran and North Korea over their nuclear programs could lead to a full-blown war with both nations.

VOA: standard.2010.07.13

Take the allegations that Iran and North Korea have collaborated on missile programmes, for example.

BBC: Wikileaks: Bumpy ride ahead for US diplomats

Iran and North Korea will pull his attention more than Pennsylvania and New York.

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Places like Iran and North Korea continue to be a threat as they pursue nuclear weapons.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Measure of a Superpower: A Two Major Regional Contingency Military for the 21st Century | Page: 3