The Wall Street Journal reports:

The United Nations atomic agency confirmed Tuesday that its inspectors had found traces of near weapons-grade nuclear material at Iran’s underground Fordow facility but said Tehran continues to produce 60% enriched uranium at the site.

In a confidential report sent to member states and viewed by The Wall Street Journal, the International Atomic Energy Agency said that during a check at Fordow on Jan. 22, the IAEA took samples which were found to contain highly enriched particles of up to 83.7%.

The IAEA said Iran claimed in a letter this was the result of “unintended fluctuations in enrichment levels.”

Weapons-grade enriched uranium is generally considered to be from around 90%-enriched uranium. [Continue reading…]