The U.N. nuclear watchdog says Iran has further increased its stockpile of uranium enriched to near weapons-grade levels.

This follows earlier reports from Monday that Iran is poised to reject a US proposal to end a decades-long nuclear dispute. The US nuclear deal proposal that was allegedly given to Iran would allow limited and low-level uranium enrichment,

The Trump administration has pitched Iran on a revised nuclear deal that would allow Tehran to continue enriching uranium after it is signed.