Harf said on Friday that "we expect for the anti-Iran sanctions suspension piece to happen generally within the first year, but again, if Iran takes these steps more quickly, then the suspension can come more quickly.” Harf added that "Iran will receive sanctions relief" only after the International Atomic Energy Agency (IAEA) verifies that Tehran has taken steps to implement the "agreement reached in Lausanne, Switzerland on Thursday.
"This is a wrong impression about the Lausanne understanding," Araqchi told the state-run TV on Saturday.
"The Lausanne statement explicitly states that the sanctions will be annulled; all nuclear-related economic and financial sanctions will be removed in the first stage," Araqchi stressed.
He said the contents of the White House factsheet about the Lausanne agreements are wrong, and the statements made by the (US State Department) spokeswoman are wrong too," Araqchi added.
He reiterated that economic sanctions and restrictions against Iran will be removed in the first stage of the implementation of the agreement.
"And if the Americans have an impression other than this, well it will surely be the topic of negotiations in the next round of the talks," Araqchi added.
Iran and Group 5+1 (the five permanent UN Security Council members plus Germany) started their new round of talks in Lausanne, Switzerland, last week to narrow their differences over Tehran's nuclear energy program ahead of a July 1 deadline.
After nine days of hard work, the seven nations reached an understanding which laid the ground for them to start drafting the final nuclear deal.
Iranian Foreign Minister Mohammad Javad Zarif and EU foreign policy chief Federica Mogherini had a joint press conference to release a joint statement at the end of the talks in Lausanne, Switzerland, on Thursday to declare the agreements they have struck so far.
Minutes later, Zarif warned in a second press conference that Tehran will reciprocate any violation of the final nuclear deal by the six world powers with similar action.
He said that the agreements and the shared understanding developed in the last eight days of talks will be the basis for working out a final nuclear deal after the inclusion of details and mechanisms for implementing them.
Zarif reiterated that a final deal should be worked out in the next three months.
He said Iran is committed to the documents that it signs and expects the six world powers to do the same.
Zarif said work will continue by the seven nations "to proceed based on their present shared understanding", adding that the seven nations should look ahead with optimism "and if any problem arises, we should sit and talk based on mutual respect, and then move ahead".
Asked about Iran's possible reaction if the opposite side defies its undertakings under the pretext of having a different interpretation of the solutions gained, he said that the seven nations party to the nuclear talks might present today's agreement in different ways as they see fit.
"What was agreed as different solutions to achieve a comprehensive joint plan of action is based on a win-win approach that will end the sanctions against Iran."
"Iran's nuclear program will continue, but we will adopt measures to build confidence at international level," he added.
He said Iran will inspect the opposite sides' actions and attitude precisely to verify their compliance with the terms of the final deal, once the document is drafted and put into effect.
"There will be a text on which we will agree and move ahead step by step and all the mechanisms should go into effect article by article. We will be ready to remove any pretext or excuse that could be sought by the western side through logic and reasoning."
"But if lack of action is witnessed, reciprocal measures will be taken," the Iranian foreign minister warned.
Zarif underlined that Iran's nuclear R&D will continue and none of Iran's nuclear facilities will be shut down.
He repeated that all the US, EU and UN security council sanctions against will be removed.