In a statement, it said it would no longer observe À̹ÌÅ×À̼dz²¼º°¡¹æ=À̹ÌÅ×À̼dz²¼º°¡¹æ limitations on its capacity for enrichment, the level of enrichment, the stock of enriched material, or research and development.
The announcement followed a ¼¿ïÀϼö=¼¿ïÀϼö°¡¼ººñ meeting of the Iranian cabinet in Tehran.
Tensions have been high over the killing of Iranian General Qasem Soleimani by the US in Baghdad.
What happened on Sunday?
Hundreds of thousands turned ¸íǰ·¹Çø®Ä«=¸íǰ·¹Çø®Ä« out in Iran on Sunday to give Soleimani a hero's welcome ahead of his funeral on Tuesday.
Earlier, Iraqi MPs had passed a non-binding resolution calling for foreign troops to leave the country after the general's killing in a drone strike at Baghdad airport on Friday.