Iran’s Foreign Ministry says it’s open to a deal to limit its ability to enrich uranium in exchange for relief from sanctions. But Foreign Minister Abbas Araghchi said any new agreement must include the right to enrich nuclear material for peaceful purposes. His comments came after U.S. and Iranian diplomats held indirect talks in Oman on Friday, as U.S. warships gathered within striking distance of Iran amid Trump’s threats of a new attack.

Abbas Araghchi: “Iran’s power lies in its ability to resist bullying, hegemony and pressure from others. The U.S. and their allies are afraid of our atomic bomb, but we are not looking for an atomic bomb. Our key strength is the power to say no to the great powers.”

In more news from Iran, security forces have announced the arrest of four senior opposition politicians, including the head of the Reformist Front, widening a crackdown on dissent that’s left thousands of people dead since protests erupted in late December. Those arrested face charges of plotting to overthrow Iran’s Islamic regime. Separately, the jailed Nobel Peace laureate Narges Mohammadi has ended a hunger strike, after an Iranian court on Saturday sentenced her to another seven years in prison. She was on medical leave from prison in December when she was arrested at a memorial service for a well-known human rights lawyer who died under mysterious circumstances. Mohammadi has already spent over a decade behind bars.