Iran uranium of elevated enrichment raises concern

IAEA inspectors report finding traces of uranium enriched up to 27% in an Iranian facility, exceeding the maximum 20% permitted. The revelation may complicate talks on Iran's nuclear program.

VIENNA — United Nations experts are investigating why tiny particles of uranium found in an underground Iranian nuclear facility had been enriched beyond levels previously acknowledged, a discovery that raised questions about whether Iran is getting closer to creating weapons-grade material for a nuclear bomb.

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