By REUTERS
ANKARA - European Union foreign policy chief Catherine Ashton arrived in Tehran on Saturday to discuss issues including Iran's disputed nuclear program, before another round of talks between Iran and world powers, Iranian media reported.During Ashton's two-day visit, her first to Iran and the first by an EU foreign policy chief since 2008, bilateral, regional and international issues will be discussed, the semi-official Fars news agency reported.Russia conducts military drills in Mediterranean Sea