Iran drives another stake into the heart of the nuclear deal

 Iranians tear up a US flag during a demonstration in Tehran on January 3, 2020.

(CNN)The nuclear deal painstakingly negotiated by the international community with Iran has become the first victim of the crisis provoked by the killing of Iranian general Qassem Soleimani in Baghdad in a US drone attack.

But while declaring its independence from the JCPOA, Iran has not articulated any intention to race towards weapons-grade uranium.
After a cabinet meeting in Tehran, Iran announced Sunday that it would no longer limit itself to the restrictions contained in the deal, known as the Joint Comprehensive Plan of Action or JCPOA. The deal was implemented in 2016, freezing Iran's nuclear program in return for a progressive lifting of international sanctions.
    The announcement said "Iran will set its limits based on its technical needs," essentially rendering the JCPOA redundant if technically still alive.
      It was the fifth step in Iran's graduated divorce from the nuclear deal, the latest stage in a gradual chipping away at its provisions that began last July in response to US withdrawal from the deal and re-imposition of tough sanctions.
      Essentially Iran no longer recognizes any limits on the operational aspects of its nuclear program; including in enrichment capacity, the extent (or degree) of enrichment, and nuclear research and development.
      In other words, Iran is prepared to let its nuclear centrifuges spin.
      But it also held out an olive branch. Foreign Minister Mohamed Javid Zarif tweeted: "This step is within JCPOA & all 5 steps are reversible upon EFFECTIVE implementation of reciprocal obligations. Iran's full cooperation w/IAEA will continue."
      A separate statement said Iran would "continue to work with international nuclear agencies and will return to JCPOA limits once all sanctions are removed from the country."
      Analysts noted that even as the JCPOA lurches towards irrelevance, Iran has shown a measure of self-restraint.
      Hans Kristensen, Director of Nuclear Information Project at the Federation of American Scientists said "This does not (yet) mean Iran is leaving JCPOA or building nuclear weapons."
      "Apparently, other limits of agreement are still in place as is IAEA inspections," Kristensen tweeted.
      "Its 5th step away from its JCPOA commitments is less harsh than the initially feared resumption of 20% enrichment," tweeted Ali Vaez, Director of the Iran Project at the International Crisis Group. "This shows Iran still wants the Europeans on its side and doesn't want to break the deal yet."
      Eric Brewer, a former official at the US National Security Council, agreed. He told CNN: "They've clearly left themselves room to maneuver," Brewer said. "And they clearly chose not to come out with something more aggressive in the wake of Soleimani's death - like increasing enrichment to 20%."
      Brewer said that the bigger question "is whether Iran acts on this announcement by adding more centrifuges." That could potentially push it closer to developing a nuclear weapon.
      What matters is what Iran does next.
      Michael Singh, a senior director at the Washington Institute and formerly a senior director for