Asked if a possible agreement in Vienna would also deal with the question of Iran’s ballistic missiles programme and Iran’s role in the region, Borrell responded: ‘’Let’s go step by step.”

As a fourth round of indirect talks between the US and Iran have opened in Vienna,   EU foreign policy chief Josep Borrell said Monday that ‘’there is a window of opportunity that will stay open for a couple of weeks until the end of the month.’’

In an briefing for journalists following Monday’s Foreign Affairs Council in Brussels, Borrell, he is the coordinator of the Joint Comprehensive Plan of Action (JCPOA), the 2015 nuclear deal between world powers and Iran, declared: ‘’This remains an extremely delicate and intense diplomatic process. I dare to say that I am optimistic, there is a window of opportunity that will stay open for a couple of weeks until the end of the month but a lot of work is needed, time is limited and I hope that the negotiations will enter in a phase of non-stop negotiation in Vienna.’’

Asked if a possible agreement in Vienna would also deal with the question of Iran’s ballistic missiles programme and Iran’s role in the region, Borrell responded: ‘’Let’s go step by step. I said that I dare to say that I am optimistic, but not about the whole universe. I am optimistic about what is going on in Vienna. What is going on in Vienna is an effort to make the US to go back to the agreement, in order to have a full compliance for Iran. Which is the best way to ensure the exclusively peaceful nature of the Iran nuclear programme.’’

‘’Not everything will be solved in these couple of weeks. There will be a lot of other different issues that will be put on the table later on. But by the time being, let’s try to go back on track of the previous agreement,’’ he added.