VIENNA - Nuclear talks between Iran and six world powers have been making progress and will continue to do so, Iran's Foreign Minister Mohammad Javad Zarif told reporters on Wednesday."We have made progress and we will make progress," he said after a one-on-one meeting with US Secretary of State John Kerry. "We will use every opportunity to make progress."He said Tuesday's decision by the six powers and Iran to extend the terms of an interim nuclear deal until July 7 after they missed a June 30 deadline for a long-term accord did not mean there was a new deadline. "We did not set any deadline. We will continue," he said.