According to Joe Biden, the US and European allies warn Iran that if it does not stop taking provocative nuclear steps, it will prevent the country from returning to the 2015 Nuclear Non-Proliferation Treaty.
The US President made the statement at the G20 summit.
The leaders of the United States, Germany, France, and the United Kingdom are trying to persuade Iran to suspend uranium enrichment and return to the norms of the nuclear deal.
The leaders of the four states say they are making every effort to prevent Iran from developing or acquiring nuclear weapons.
The G20 summit in Rome will be held on October 30 and 31. Global economic issues and climate change are among the issues to be discussed.