The United States and Iran agreed through intermediaries on Tuesday to establish two working groups to try to get both countries back into compliance with the 2015 Iran nuclear deal.

In a meeting of the current members of the deal in Vienna, all parties agreed to establish one working group to focus on how to get the United States back to the deal by lifting harsh economic sanctions imposed or reimposed after President Donald J. Trump pulled out of the accord in May 2018.

The other working group will focus on how to get Iran back into compliance with the accord’s limitations on nuclear enrichment and stockpiles of enriched uranium.