Tornado Alley (PROG)

[F6]

What is the Iran nuclear deal?

European Union High Representative for Foreign Affairs and Security Policy Federica Mogherini, Iranian Foreign Minister Mohammad Javad Zarif, British Foreign Secretary Philip Hammond and Secretary of State John Kerry stand together in July 2015.
The agreement was aimed at ensuring that Tehran's nuclear program "will be exclusively peaceful" in return for the lifting of sanctions.
Apr.25.2018
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Who signed it?
Iran signed the agreement with the five permanent members of the U.N. Security Council — the U.S., Russia, France, China and the United Kingdom — as well as Germany and the European Union.
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https://www.nbcnews.com/storyline/smart-facts/what-iran-nuclear-deal-n868346 [with embedded videos]

6 questions about the Iran deal you were too embarrassed to ask

Former US Secretary of State John Kerry and current Iranian Foreign Minister Mohammad Javad Zarif both negotiated the Iran nuclear deal. Trump seems poised to remove the US from the deal on Tuesday, May 8, 2018.
President Trump has withdrawn the US from the Iran nuclear deal. Here’s what you need to know.
Updated May 8, 2018
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1) What does the Iran deal do?
Simply put, the nuclear deal, known formally as the Joint Comprehensive Plan of Action, stops Iran from getting a nuclear weapon for at least a decade.
On July 14, 2015, a group of countries — the United States, the United Kingdom, France, Russia, China, Germany, and the European Union — agreed to lift crippling sanctions imposed on Iran’s nuclear program, giving it greater access to the global economy.
In return, Iran agreed to take concrete steps to curb its nuclear program, limiting it to strictly peaceful applications, and to allow comprehensive inspections of key nuclear facilities by the International Atomic Energy Agency (IAEA) to ensure compliance.
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https://www.vox.com/2018/5/8/17319608/trump-iran-nuclear-deal-announcement-explained

DEAL OR NO DEAL
What does the Iran nuclear deal entail, which countries signed it and when was it agreed?
The agreement took years to make and could all fall apart after Donald Trump withdrew the US from the deal - here's what you need to know
10th May 2018
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Which world powers signed it?
Islamic Republic of Iran
China
France
Russia
United Kingdom
United States of America
Germany
The European Union
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https://www.thesun.co.uk/news/6184688/iran-nuclear-deal-world-powers-donald-trump-us-withdraws/ [no comments yet]

with all parties, including Iran, complying with the deal until Trump put this country in violation of the agreement

that bit you referenced at most a distinction without a difference (the next steps for any noncompliance with the deal never intended or expected to be by means of any court actions in any event), and absolutely meaningless in terms of whether the deal actually exists/existed or is/was a deal -- my comment stands