'The United States has restored sanctions waivers to Iran to allow international nuclear cooperation projects, as indirect talks between Tehran and Washington aimed at salvaging the 2015 nuclear deal enter a critical phase.
The waivers were rescinded by the United States under former President Donald Trump, who pulled out of the agreement and reimposed crippling sanctions.
The U.S. State Department has sent a report signed by Secretary of State Antony Blinken to Congress explaining that restoring the waivers will help the talks in Vienna on returning to the deal, formally called the Joint Comprehensive Plan of Action (JCPOA).
..
The official added that there had been some progress in narrowing down the list of differences and that now is the time for political decisions.'