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Negotiators on
sides say the talks will be difficult and
side foresees any early breakthroughs. US President Joe Biden is
to re-engage with Iran and revive the nuclear
. He hopes Iran will resume its compliance with the 2015 deal. US
Robert Malley said: "The primary issues to be discussed are actually quite simple. They are, on the
hand, the nuclear steps that Iran would need to take to return to compliance with the 2015 nuclear accord, and on the other hand, the sanctions-relief
that the United States would need to take." Iran said it is
to "reverse its remedial measures, which were taken
of the opposite side's
of the treaty."