article_snippet: There's no guarantee they'll reach a deal.
article_snippet: While both sides stand to gain from a potential agreement, both sides also have certain "red lines" both sides aren't willing to cross -- key issues that could sink the prospects of a deal even if everything else is agreed to.
article_snippet: So even as negotiators express some optimism about the progression of talks, it's clear that there are major gaps to bridge, which may be why some U.S. officials have put the odds of reaching a deal at 50% or less.
article_snippet: Even if there's a deal, it's not a deal.
article_snippet: The parties are seeking to reach what's being called a framework agreement -- essentially a political understanding of the main principles of a deal.
article_snippet: But if The parties're able to come together on the big issues, The parties still have until the end of June when the Joint Plan of Action expires to iron out the details.
article_snippet: Officials have been vague about the format a deal might take as well as how much of a deal will be made known to the public and international stakeholders.
highlights_snippet: Parties are seeking a framework agreement -- or main principles of final deal -- by next week .
  