1. The missiles tested weren't the kind that can carry a nuclear warhead.
2. US intelligence officials have said that Iran is at an advanced stage of developing a missile that can carry a nuclear warhead.
3. Administration officials have contended the country must try to develop a nuclear warhead that could destroy deeply buried targets including bunkers tunneled into solid rock.
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4. Leaked details showed that the report will focus on Iran's effort to install nuclear materials to a warhead and develop missiles for delivery.
5. They include federal research laboratories and other sites involved in nuclear stockpile stewardship and warhead dismantlement.
6. Uranium enriched to a low level produces fuel for a nuclear reactor, while higher enrichment produces the material needed for a warhead.
7. The IAEA says Iran is continuing to expand uranium enrichment, an activity that can make either nuclear fuel or fissile warhead material.
8. The process can produce fuel for a reactor or fissile material for a nuclear warhead.
9. It is not clear whether the North has been able to develop a nuclear weapon small enough to fit into a missile warhead.
10. Uranium enrichment can produce either fuel for a nuclear reactor or the material for a warhead.