Reaching an agreement is possible and there is nothing that cannot be resolved, Rouhani added.
However, the Iranian president confirmed that there are some differences remained between the sides, the official website of the president reported March 21.
In the latest round of the talks with the P5+1 (the US, the UK, Russia, China, France and Germany) the view points were achieved in some areas, Rouhani said.
“A difference of opinion was observed there earlier,” he said. “This can be a base for a final agreement.”
The remaining differences even could be resolved in the recent negotiations, Rouhani said, adding both sides felt that they need more time and postponed the negotiations to the next few days.
The Iranian president further said that the counter side should make its final decision for a nuclear agreement.
Iran and the P5+1 are negotiating to conclude a comprehensive nuclear agreement by July 1. They have agreed to come to a political understanding by late March.
The sides held their latest round of talks in Switzerland from March 15 to March 20.
Iran and the P5+1 signed an interim nuclear deal in November 2013 to provide Iran with some sanctions relief in exchange for Tehran agreeing to limit certain aspects of its nuclear activities.
After the sides failed to meet the November 24, 2014 deadline they extended the aforementioned deal.
The US and its Western allies suspect Iran of developing a nuclear weapon, something that Iran denies.
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