Iran said Thursday that it remains “serious” about reaching a revived nuclear deal with major powers that would end economic sanctions and to which the United States is again a party. Foreign Minister Hossein Amir-Abdollahian was speaking at a joint news conference with visiting Russian counterpart Sergei Lavrov as talks between the parties in Vienna remain stalled. “The nuclear negotiations train has reached difficult stops as they near the end,” Amir-Abdollahian said. He stressed Iran was “serious about reaching a good, strong and lasting agreement” and called for similar realism from the US…