The White House said Tuesday it expects a "long process" as the U.S. and Iran hold indirect talks this week on a return to the 2015 nuclear deal. White House press secretary Jen Psaki told reporters that the Biden administration expects "difficult portions" of the talks but that diplomacy is "the right path forward." The U.S. and Iran aren't meeting face-to-face, but representatives from European and other nations are serving as go-betweens. Former President Donald Trump pulled the U.S. from the Iran deal in 2018, and President Joe Biden's administration is aiming to revive the accord. The talks are being held in Vienna.