As a candidate, Trump issued a variety of statements about last year's pact. He called it "stupid," a "lopsided disgrace" and the "worst deal ever negotiated," railing against its time-limited restrictions on Iran's enrichment of uranium and other nuclear activity, and exaggerating the scale of U.S. concessions. Trump said that he doesn't want to simply tear up the agreement. Instead, he spoke of reopening the diplomacy and declared that unlike President Barack Obama's diplomats, he would have been prepared to walk away from talks. Trump's exact plans are vague, however, and a renegotiation would be difficult. Iran has little incentive to open talks over a deal it is satisfied with. And none of the other countries in the seven-nation accord has expressed interest in picking apart an understanding that took more than a decade of stop-and-go diplomacy and almost two full years of negotiation to complete. As Iran's supreme leader, Ayatollah Ali Khamenei, has said: If the U.S. tears up the agreement, "we will light it on fire." President Hassan Rouhani said this week no country could simply change what was agreed, pointing to a U.N. Security Council resolution that endorsed the package. The deal, which went into effect in January, forced Iran to pull back from the brink of nuclear weapons capacity in exchange for an end to many of the U.S. and European sanctions that devastated Iran's economy. It has been largely respected despite undiminished U.S.-Iranian tensions throughout the Middle East, including their support for rival sides in Syria and Yemen's civil wars. Each side has leverage: Iran doesn't want a new onslaught of U.S.-led economic pressure and America would be alarmed by any Iranian escalation of its nuclear program. But the accord rests on fragile ground, with powerful contingencies in Washington and Tehran vehemently opposed and looking for any excuse to break it apart. In such a climate, it's unclear what Trump's demands for a renegotiation might mean. "The agreement is valid only as long as all parties uphold it," State Department spokesman Mark Toner acknowledged Wednesday in the agency's first briefing since Trump's stunning election victory over Hillary Clinton to become the 45th president. Last summer, Walid Phares, a Trump adviser on the Middle East, said Trump wouldn't pull out of an agreement with America's "institutional signature," but rather revise elements through one-on-one negotiations with Iran or with a larger grouping of allies. Daryl Kimball, executive director of the pro-deal Arms Control Association, said that re-litigating the deal would unsettle American allies, with no clear picture of what Trump would be trying to accomplish. Trump could also send the deal to Congress, whose Republican majority has opposed it.
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