DUBAI (Reuters) - Iran has sent a new batch of enriched uranium to fuel a medical research reactor in its capital, the country's nuclear chief said on Sunday, an indication Tehran is digging in as its standoff with world powers over the enrichment continues. Fereydoon Abbasi-Davani, the head of Iran's Atomic Energy Organization, said a fourth batch of 20-percent enriched fuel produced inside Iran has now arrived at the Tehran Medical Research Reactor, according to the Mehr news agency. Iran says the reactor produces medical isotopes used to treat cancer patients. ...
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