DUBAI, June 15 -- UN nuclear chief Rafael Grossi told an emergency meeting of the UN Security Council that Israeli strikes destroyed the above-ground section of Iran's main nuclear facility at Natanz. He said all the electrical infrastructure and emergency power generators were destroyed as well as a section of the facility where uranium was enriched up to 60%. The main centrifuge facility underground did not appear to have been hit, but the loss of power could have damaged the infrastructure there, he said. The UN atomic watchdog also said that there's no indication of increased radiation levels at Iran's main uranium-enrichment site. Iranian authorities told the IAEA they haven't observed higher radiation doses at the Natanz facility, loc...