In Austria, talks continue this week on relaunching the Iran nuclear deal, from which the U.S. unilaterally withdrew in 2018 under Trump’s presidency. Officials expressed cautious optimism at the talks’ progress as one diplomat called a renewal of the deal “feasible.” The head of the U.N.'s International Atomic Energy Agency expressed concern this week with the continued push by Tehran to enrich uranium at “weapons grade” levels. Iran has said the U.S. would need to lift all sanctions before it comes back into compliance with the deal's terms