Iranian nuclear negotiators at a recent meeting in Vienna. Photo: Dragan Tatic, wikimedia.

Washington Post – For the six global powers in talks with Iran, the goals have always been clear — blocking Iran’s path to a nuclear bomb while eventually lifting sanctions that have hobbled its economy and caused hardship for the Iranian people.

But as negotiators gather in Vienna this week in one last push for a deal, decades of mutual mistrust and years of Iranian obfuscation on its nuclear program may be proving too much to surmount.

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