TEHRAN : Iranian Foreign Minister Mohammad Javad Zarif has invited EU foreign affairs chief Catherine Ashton to visit the Islamic republic, Mehr news agency cited his deputy as saying on Saturday. “Ashton has received an open invitation from Zarif to travel to Iran whenever she wants,” Abbas Araqchi, the deputy negotiator in talks on Iran’s disputed nuclear programme, said without giving any dates for the proposed trip. Iran and world powers agreed Friday on how to implement a landmark deal on containing Tehran’s nuclear programme, but it must still be approved by each country before it can take effect.“The negotiations were carried out in the atmosphere of mutual understanding and we found solutions for all the three points of disagreement, but the capitals should decide whether they accept or reject the solutions,” said Araqchi.