Iran announces that any nuclear agreement with the world powers is only possible if they will first lift the sanctions "all at once".

This condition was aired to the media by Abbas Araqchi, who is Iran's Senior nuclear negotiator and the country's deputy Foreign Minister.

Like Us on Facebook

He said Iran follows the principle that if any nuclear accord will be reached, it will be because the other negotiators in the deal have agreed to remove the sanctions on his country.

Araqchi's remark comes after a meeting with representatives of the so-called 'P5+1,' a group consisting of the United States, Britain, China, France, Russia plus Germany. The event was held in the Swiss city of Montreux on Thursday.

 Araqchi emphasized that the sanctions against Iran is a very important aspect of the talks. Aracqui is leaving it up to the other negotiators to decide which option to take - reach a nuclear deal or continue the pressure on Iran by way of sanctions.

Iran and the world powers are both looking forward to reach a more definitive level of understanding by the end of this month.

But Iran's senior negotiator admitted that major issues have yet to be sorted out.

The particular meeting in Montreux took only one day.

The last time this group of senior western diplomats talked with Iran was about two weeks ago in Geneva.

Earlier this week, U.S. Secretary of State John Kerry conducted a three-day discussion with his Iranian counterpart, Mohammad Javad Zarif, also in the Swiss City.

Then on Wednesday, he flew to Saudi Arabia to talk with Persian Gulf member states.

The topic also focused on the negotiations for Iran's nuclear program.

The interim nuclear agreement signed in November, 2013 requires Iran to postpone its critical nuclear operations, in exchange for a limited ease of sanctions.

Negotiators have twice missed coming up their self-imposed deadline to come up with a final agreement.

In November, they extended their own deadlines, in the hopes that a final accord will be finished within seven months.