The third round of talks in three weeks raised hopes for an Iran nuclear accord, which could avert a new Mideast conflict. President Trump said he believed a deal was within reach.

Secretary of State Marco Rubio says Iran must give up all nuclear enrichment if it wants to make a deal during talks with the Trump administration and head off the threat of armed conflict.

Washington opposes Tehran’s insistence on retaining the ability to enrich uranium, but U.S. calls latest round “productive.”