Print article BERLIN - Officials from the United States, Iran and other signatories to the Iranian nuclear deal converged in Vienna on Tuesday in the first significant step toward reviving the beleaguered 2015 agreement that President Biden has pledged to rejoin. The meetings are not expected to include direct talks between Washington and Tehran - who have been at loggerheads on the process of how to return to the deal even while both express the desire to do so. Instead, diplomats from European countries will act as intermediaries in what Thomas Countryman, former acting undersecretary of state for arms control under the Obama administration, called a creative effort in “shuttle-down-the-hall-diplomacy.”