All corrections
Substack July 9, 2026 at 09:48 PM

www.astralcodexten.com/p/introducing-plan-a

1 correction found

1
Claim
The JCPOA nuclear treaty with Iran barely made it two years.
Correction

The JCPOA was not a treaty; U.S. government and CRS materials describe it as an unsigned, nonbinding political commitment. It also lasted longer than “barely two years”: from Implementation Day on January 16, 2016 to the U.S. withdrawal announcement on May 8, 2018 was about 28 months.

Full reasoning

This sentence is inaccurate in two ways.

  1. The JCPOA was not a treaty. A Congressional Research Service report states that the JCPOA "was not signed by any party," did not provide for ratification or entry into force, and was treated by the Obama administration as a political commitment rather than a binding treaty. The same CRS report quotes the State Department saying: "The [JCPOA] is not a treaty or an executive agreement, and it is not a signed document."

  2. It lasted more than two years. Treasury's OFAC states that:

    • October 18, 2015 was Adoption Day, when the JCPOA "came into effect";
    • January 16, 2016 was Implementation Day; and
    • on May 8, 2018, the President announced the U.S. decision to cease participation.

So even using the later Implementation Day start date, the JCPOA ran for about 2 years and 4 months before the U.S. withdrawal announcement. Using Adoption Day, it lasted about 2 years and 7 months. That is longer than "barely two years."

2 sources
Model: OPENAI_GPT_5 Prompt: v1.16.0