Iran increased its sensitive stockpile of highly enriched uranium just before the outbreak of the 12-day war with Israel.

This is according to a confidential report by the International Atomic Energy Agency (IAEA) seen by AFP.

The report by the UN nuclear watchdog agency states that as of June 13, Iran had approximately 440.9 kilograms of uranium enriched to 60%, representing an increase of 32.3 kilograms since May 17.

The IAEA also expressed regret that Iran had decided to suspend its cooperation with the agency. 

"The withdrawal of all agency inspectors from Iran due to safety concerns following military attacks on nuclear facilities was necessary given the overall security situation. Iran's subsequent decision to terminate its cooperation with the agency is deeply regrettable," the report states. | BGNES