U.S. Secretary of State Kerry arrives for a news conference in Vienna
U.S. Secretary of State John Kerry arrives for a news conference in front of Palais Coburg, the venue for nuclear talks in Vienna, Austria, July 1, 2015. Major powers and Iran are making progress in their talks on a nuclear agreement but some very difficult issues remain, U.S. Secretary of State John Kerry told reporters on Wednesday.
"We have some very difficult issues, but we believe we are making progress and we are going to continue to work because of that," Kerry told reporters in response to a shouted question. REUTERS/Leonhard Foeger