DUBAI, March 24 (Reuters) - The revival of a 2015 nuclear deal can happen in the short term if the United States shows pragmatism in Vienna negotiations, Iran's Foreign Minister Hossein Amirabdollahian said on Thursday during a press conference in Beirut. "If the United States is slot pragmatic, a nuclear deal can be reached in the short term," he said, adding that the issue of sanctions relief for Iran...