Iran has increased production of highly enriched uranium, according to the United Nations nuclear watchdog, as the nation conducts talks with the United States on a nuclear deal.

Iran has continued to produce highly enriched uranium at a pace of roughly one nuclear weapon’s worth a month over the past three months despite talks between Washington and Tehran on a new nuclear deal,

Tehran now has the capability to produce bomb-grade fuel for roughly 10 weapons, according to a confidential United Nations report.