Iran's foreign ministry in a statement ruled out any renegotiation of the terms, saying it "will not accept any changes in this agreement now or in the future" nor allow it to be linked to any other issue.
The decision to waive the sanctions was to be announced in a statement issued by the White House a day after Trump engaged in lengthy discussions with US Secretary of State Rex Tillerson, national security adviser H.R. McMaster and others about the deal.
"In response to a question about Trump's threats to rip JCPOA, Araghchi told Iranian State TV on Sat." for a year since Mr. Trump came to power, he has extended the waivers and this shows his attempts have failed one after another".
Germany to keep seeking full implementation of Iran deal - spokeswoman
Officials, congressional aides and outside administration advisers said the president would likely extend the sanctions waivers, citing progress in amending US legislation that governs Washington's participation in the accord. "Here at the United Nations, we look forward to gaining new global cooperation to strengthen actions against Iranian missile activity, enforce arms embargoes that Iran violates, crack down on Iranian sponsorship of terrorism, and continue to shine a light on Iranian human rights violations".
"We are also targeting Iran's ballistic missile program and destabilizing activities, which it continues to prioritize over the economic well-being of the Iranian people", Mnuchin said in a statement.
Additionally, the president is hoping that the Iran deal will require better United Nations inspections of Iran's nuclear sites and that Iran avoid a "breakout period" of being able to produce enough uranium for a nuclear bomb. The follow-on agreement that Trump wants would include "triggers" that would automatically re-impose sanctions should Iran break certain thresholds regarding its ballistic missile program, nuclear breakout, and inspections and would eliminate the sunset clauses now in the agreement. It was also signed by China, France, Russia, Britain, Germany and the European Union. Under the current deal they are set to expire in 2025.
"JCPOA is not renegotiable: rather than repeating exhausted rhetoric, U.S. must bring itself into full compliance - just like Iran", Zarif tweeted immediately after Trump's speech.
The US has taken a tough line on the recent demonstrations in Iran, condemning the Iranian regime and voicing support for the protestors. Raj Bhala, an global trade law expert who has studied sanctions, can discuss the announcement, its effects, the nuclear deal, Iran, the country's economy, economic protests in Iran, the U.S. -Iran relationship and related topics.
"The deal is a long-lasting victory for Iran", added Rouhani.