VIENNA -- U.S. Ambassador to the United    Nations Nikki Haley arrived at the headquarters of the    International Atomic Energy Agency (IAEA) on Wednesday to    increase the Trump administration's understanding of    Iran's compliance with the    nuclear deal reached under President Obama, but also    to try and ratchet up pressure on Iran after its recent    ballistic missile    tests.  
    Haley met IAEA Director General Yukiya Amano, and was also to    meet some of the technical experts who monitor nuclear    activities, including those in Iran governed by the nuclear pact signed by the    U.S., a handful of its allies, Russia and Iran.  
    In a statement released after her meeting with Amano, the U.S.    United Nations delegation said Haley had stressed U.S.    "concerns about ensuring Iran strictly adheres to its    obligations." One of her primary missions -- not just in Vienna    but back at U.N. Headquarters -- is to persuade the    international community that Iran is not adhering to those    obligations, and to ensure that it does.  
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    The trip comes as the Trump administration's war of words with    Iran is ramping up. Iran's nuclear chief, Ali Akbar Salehi,    issued an ominous warning on Tuesday that his country could,    "if we make the determination resume 20 percent-enrichment in,    at most five days." Under the terms of the nuclear deal, Iran    is banned from enriching uranium to that level, which can make    it useable in nuclear weapons.  
    For now, Haley is focused on trying, along with Western    partners, to make what President Trump has called the "worst    deal," better, by pressing Iran to stop test launching    ballistic missiles.  
    The U.S. has imposed new sanctions under Mr. Trump, pointing at    the missile launches, Iran's human rights record and its    support of terrorism abroad, but the 2015 nuclear deal --    officially the Joint Comprehensive Plan of Action (JCPOA) --    does not explicitly deal with any of those issues.  
    The issue is the interpretation of the nuclear agreement, and    whether launching ballistic missiles is, in fact, a violation    of it.  
    In an     August 2nd letter sent to Italian Ambassador Sebastiano    Cardi (who chairs the Iran sanctions committee) and to U.N.    Secretary-General Antonio Guterres, Haley argued on behalf of    France, Germany the U.K, and the U.S. that Iran had taken    actions inconsistent with the nuclear deal by launching a    Simorgh space launch vehicle that has the capacity to    carry a nuclear weapon.  
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    The U.N. Security Council Resolution (UNSCR 2231) on the    nuclear pact calls on Iran, "not to undertake any activity    related to ballistic missiles designed to be capable of    delivering nuclear weapons, including launches using such    ballistic missile technology."  
    In the letter she penned, Haley argued that, "Iran's    longstanding program to develop ballistic missiles continues to    be inconsistent with UNSCR 2231," and she called for the issue    to be taken up at the Security Council.  
    While all four Western powers that signed onto that letter are    in agreement that Iran's ballistic missile tests are a    violation of the U.N. resolution, neither the U.K., France, nor    Germany have followed the U.S. lead to impose new sanctions.  
    Asked about the letter, Italy's Cardi told CBS News that this    week that he is consulting the other members of the committee    to put together a unified response.  
    After the most recent launch by Iran, Haley laid down the    gauntlet: "We will continue to impose consequences until Iran    stops its provocations and complies fully with Security Council    resolutions."  
    The issue that Haley confronts is that the IAEA is not mandated    to deal with missile tests, and in its seven reports on Iran's    adherence to the deal thus far the agency says Iran has completed the steps    required under the JCPOA and the U.N. Resolution.  
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    U.S.     law requires the White House to certify Iran's compliance    with the deal every 90 days, which Mr. Trump, despite his    professed reluctance, did for a second time in July in spite of    pleas from several senators.  
    Haley's trip will have implications for the next round of    certifications of the nuclear deal, by both the U.S. and the    IAEA, in October. There have been, experts point out, a few    technical breaches in by Iran of the terms of the nuclear deal,    but the June report appeared to show that those had been    corrected.  
    While Mr. Trump continues to lambast the deal, Haley continues    to try and garner support in the international community for    the position that Iran is violating more than just the spirit,    but the letter of the deal by testing nuclear-capable missiles.  
    Gary Sick, a senior research scholar at Columbia University's    Middle East Institute who served on the National Security    Council under Presidents Ford, Carter, and Reagan, tells CBS    News that the Western parties to the JCPOA are in agreement:    "The other parties, together with the U.S., are anxious to put    as much pressure on Iran as possible to at least modify or    reduce its ballistic missile tests."  
    He says that is, at least in part, why Haley came to IAEA    headquarters on Wednesday, and he agrees it necessary to keep    the pressure on.  
    Despite the tough talk by Tehran and Washington, however, Sick    doesn't think the deal is likely to be scuttled by the Trump    administration.  
    He says the ambiguity on Iran's missile testing -- the    ambiguity causing the U.S. angst and the current war of words    -- was deliberately designed into the nuclear deal.  
    "It was a very specific set of words; an agreement to    disagree," he says. "We knew that this was going to happen. It    was written into the agreement that way."  
    Iran believes Mr. Trump wants to kill the agreement and has    threatened to exit it as well. Iran's Foreign Minister Javad    Zarif said in a series of tweets that Mr. Trump, "always wanted    to kill JCPOA. To avoid isolation, he's trying to blame it on    Iran."  
    Haley insists that is not the case. She told The Washington    Post in an interview published on Tuesday that the Trump    administration had made "no decision" yet on its policy    regarding the nuclear deal.  
    The statement released by her office on Wednesday said Haley    and Amano had discussed "the importance of preventing Iran from    exploiting ambiguous language in the nuclear agreement."  
    But, "whatever the flaws of the existing nuclear deal, Trump    will find that criticizing it is far, far easier than crafting    an effective replacement to it," says Matthew C. Waxman,    faculty chair of the program on Law and National Security at    Columbia Law School.  
    As Gary Sick put it, more bluntly, if Mr. Trump choses to    "destroy the JCPOA in the name of preventing missile tests," he    could "end up in a situation where Iran actually is free to go    ahead and build a nuclear weapon."  
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Haley takes US "concerns" on Iran to the nuclear police - CBS News