Julian Arato's Avatar

Julian Arato

@aratojulian

Professor of Law, University of Michigan International law, trade, investment, contracts, corporations, etc

2,628
Followers
409
Following
82
Posts
24.08.2023
Joined
Posts Following

Latest posts by Julian Arato @aratojulian

SCOTUS strikes down Trumps Tariffs. “Based on two words … in
1702(a)(1)(B) of IEEPA—“regulate” and “importation”—the
President asserts the independent power to impose tariffs
on imports from any country, of any product, at any rate,
for any amount of time. Those words cannot bear such
weight”

20.02.2026 15:29 👍 0 🔁 0 💬 0 📌 0
Post image

My article, "Birthright Citizenship, Denaturalization, and the Specter of Statelessness" was published yesterday in the UCLA Law Review Discourse - just in time for all of the amicus briefs dropping.

papers.ssrn.com/sol3/papers....

27.01.2026 22:45 👍 93 🔁 20 💬 2 📌 1

This is so amazing and beautiful!

27.01.2026 02:09 👍 9 🔁 4 💬 1 📌 0

Congratulations! An important work on an Opinion that contains multitudes.

26.01.2026 17:03 👍 3 🔁 0 💬 1 📌 0
Preview
Negotiating a Treaty on Crimes Against Humanity – Introduction to the Joint Symposium A symposium of expert analyses on advancing the draft International Convention on the Prevention and Punishment of Crimes Against Humanity.

Prof. Chiara Giorgetti and Amb. Franz Perrez introduce a Joint Symposium on Negotiating a Treaty on Crimes Against Humanity, a collaboration with our friends at @ejiltalk.bsky.social:

www.justsecurity.org/128702/negot...

14.01.2026 14:07 👍 21 🔁 12 💬 0 📌 0
Preview
Expropriation, Oil and the Prohibition on the Use of Force: Justification Narratives and the Effectiveness of International Law in the Venezuela Crisis The US military intervention in Venezuela amounts to a manifest breach of the prohibition on the use of force under international law. Neither self-defence nor authorization by the UN Security Council...

Expropriation, Oil and the Prohibition on the Use of Force: Justification Narratives and the Effectiveness of International Law in the Venezuela Crisis | by Julian Scheu

13.01.2026 12:16 👍 2 🔁 1 💬 0 📌 0
Post image

Ahora disponible en español. Este artículo, escrito junto a @aratojulian.bsky.social, analiza el ataque de Estados Unidos contra Venezuela y sus consecuencias a la luz del derecho internacional.

lacritica.ar/post/ataque-...

07.01.2026 14:55 👍 3 🔁 1 💬 1 📌 0

My latest together with @justinauriburu.bsky.social

No love lost for Maduro, and no apologies made for his regime. But the attack on Venezuela was plainly illegal. States can either say so clearly, or parse their way into a law of boundless exceptions and self-judgment.

05.01.2026 14:07 👍 31 🔁 15 💬 3 📌 0

I found this blog post (co-authored by my colleague julian arato) very clear and helpful, fyi www.ejiltalk.org/trumps-illeg...

06.01.2026 01:29 👍 3 🔁 1 💬 0 📌 0
Post image

One of most remarkable US presentations at UN Security Council I've ever seen.

- No reference to UN Charter legal justification
- Claims Panama as precedent (which the UN condemned)
- Energy reserves ⤵️ as justification is illegal
- Sharp contrast with US Ambassador Pickering presentation in 1989

05.01.2026 16:52 👍 3112 🔁 1110 💬 253 📌 148

NB Superb analysis by @justinauriburu.bsky.social @aratojulian.bsky.social:
'The attack on Panama, like this weekend’s attack on Venezuela, was simply illegal. In fact, several of these historical arguments have since become textbook examples of impermissible justifications under the jus ad bellum.'

05.01.2026 20:09 👍 8 🔁 5 💬 0 📌 0

Congrats, Benjy!

05.01.2026 20:29 👍 0 🔁 0 💬 1 📌 0
Post image

"The Coordinating Bureau of the Non-Aligned Movement [121 member States] categorically condemns the act of aggression perpetrated by the United States . against . Venezuela ... which included armed attacks against civilian and military locations"

05.01.2026 18:05 👍 10 🔁 6 💬 0 📌 0
Post image

"the military aggression of January 3rd against targets in the territory of Venezuela [was] in clear violation of article 2 of the Charter of the United Nations"

"These actions must not be allowed"

"It is for sovereign peoples to decide their destiny"

05.01.2026 17:28 👍 16 🔁 3 💬 0 📌 0
Post image

"Brazil categorically and firmly rejects the armed intervention in Venezuelan territory in flagrant violation of the Charter of the United Nations and of international law"

"an extremely dangerous precedent for the entire international community"

05.01.2026 17:29 👍 17 🔁 4 💬 0 📌 0
Post image

"Chile would like to express our deep concern and firm condemnation of the unilateral military action taken by the United States in the territory of . Venezuela."

"Chile does not recognize the Maduro regime. But serious violations of human rights faced by Venezuela do not have a military solution."

05.01.2026 17:30 👍 12 🔁 1 💬 0 📌 0
Post image

"The unilateral military strikes carried out by the United States . wantonly violates the sovereignty, territorial integrity, and independence of Venezuela"

"Any enforcement of domestic law, including arrest, by one State within the territory of another . is an unlawful violation of sovereignty"

05.01.2026 17:54 👍 17 🔁 6 💬 1 📌 0

Justina Uriburu @justinauriburu.bsky.social and Julian Arato @aratojulian.bsky.social:

"Trump’s Illegal Attack on Venezuela and Its Consequences"

The attack "was plainly illegal" - "a flagrant and grave violation" of Article 2(4) of the UN Charter, "and a severe breach of US law".

1/12

05.01.2026 17:03 👍 3 🔁 2 💬 1 📌 0
Post image

"The military operation ... runs counter to the principle of non-use of force"

"The proliferation of violations of the [UN] Charter ... by States vested with responsibility as permanent members of the Security Council chips away at the very foundation of the international order"

05.01.2026 16:44 👍 38 🔁 18 💬 1 📌 1

US attacks on Venezuela and the abduction of Nicolás Maduro raise profound legal and geopolitical concerns, with implications well beyond Venezuela itself. In a new post co-authored with Julian Arato, we examine the attack and its broader consequences under international law.

05.01.2026 15:35 👍 21 🔁 13 💬 0 📌 1

One can hope that despite it all, a window will open for the people of Venezuela to freely determine their future. I certainly do. But hope is an expensive commodity in the world of Melos - a world without serious legal restraint.

05.01.2026 14:23 👍 2 🔁 0 💬 0 📌 0

None of this means that international law is dead or does not matter. That conclusion would be totally wrong. What is at stake is rather the nature of our international law going forward - what it prohibits, who it protects, and who it privileges.

05.01.2026 14:12 👍 3 🔁 0 💬 1 📌 0

My latest together with @justinauriburu.bsky.social

No love lost for Maduro, and no apologies made for his regime. But the attack on Venezuela was plainly illegal. States can either say so clearly, or parse their way into a law of boundless exceptions and self-judgment.

05.01.2026 14:07 👍 31 🔁 15 💬 3 📌 0
Preview
Trump’s Illegal Attack on Venezuela and Its Consequences Early on Saturday morning, 3 January, the United States attacked Venezuela. Aerial strikes were carried out in Caracas, Miranda, La Guaira, and Aragua, alongside covert operations conducted by special...

Trump’s Illegal Attack on Venezuela and Its Consequences | by @justinauriburu.bsky.social and @aratojulian.bsky.social

05.01.2026 12:52 👍 21 🔁 15 💬 0 📌 3

Some absurdly high anti-dumping tariffs (92%!) on pasta are being scaled back to just normal high levels (2 - 14%). Food price reality wins out (mostly) over protectionist instincts this time.

01.01.2026 18:05 👍 83 🔁 20 💬 2 📌 1

If you are so inclined, you can read about the philosophy of these free, case-based teaching materials at the beginning of Unit 1 - along with a note about what’s new in the 2025 update.

I’ll have a longer post about all this in the New Year. For now, merry Christmas and happy holidays all!

24.12.2025 18:07 👍 0 🔁 1 💬 0 📌 0
Teaching Materials

We have posted a new edition of Weiler, Arato, Cho, and Claussen, International Trade Law Through the Cases (2025):

jeanmonnetprogram.org/resources/th...

The update refreshes things throughout, and adds new units on Security Exceptions, Trade Remedies, and the “America First” trade policy.

24.12.2025 18:07 👍 4 🔁 4 💬 1 📌 0

If you are so inclined, you can read about the philosophy of these free, case-based teaching materials at the beginning of Unit 1 - along with a note about what’s new in the 2025 update.

I’ll have a longer post about all this in the New Year. For now, merry Christmas and happy holidays all!

24.12.2025 18:07 👍 0 🔁 1 💬 0 📌 0
Teaching Materials

We have posted a new edition of Weiler, Arato, Cho, and Claussen, International Trade Law Through the Cases (2025):

jeanmonnetprogram.org/resources/th...

The update refreshes things throughout, and adds new units on Security Exceptions, Trade Remedies, and the “America First” trade policy.

24.12.2025 18:07 👍 4 🔁 4 💬 1 📌 0

Dear authors,

EJIL: Talk! is now closed for the holiday season. We are not accepting new submissions from 20 December 2025 to 5 January 2026. Have a lovely break!

With all best wishes,

The Editors

20.12.2025 13:25 👍 3 🔁 1 💬 0 📌 0