Use of Force

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U.S. President Donald Trump (C) and Vice President JD Vance meet with Ukrainian President Volodymyr Zelensky in the Oval Office at the White House on February 28, 2025 in Washington, DC.

Negotiations at Gunpoint: Does U.S. Pressure on Ukraine for a Minerals Deal Amount to Unlawfully Procuring a Treaty by Use of Force?

Coercion leveraged by the U.S. to secure Ukrainian mineral resources could be deemed use of force, rendering any resulting treaty void.
Sudan Marks Two Years of War podcast screenshot

The Just Security Podcast: Sudan Marks Two Years of War

Sudan marks two years of war this week. Where does the country and the international community trying to support it go from here?
Two soldiers walk past a destroyed building in Khartoum.

Two Years of War in Sudan: From Revolution to Ruin and the Fight to Rise Again

As Sudan marks two years of brutal war between the Sudanese army and the RSF, the country stands at a dangerous crossroads.
Satellite image of the orbit of ASAT debris from a China ASAT weapons test in 2022.

Balancing State Security and Peace and Security in Outer Space: What Role for International Law on the Use of Force?

Understanding jus ad bellum necessity and proportionality is crucial to addressing concerns regarding the weaponization of outer space.
IMAGES (left to right): People search through buildings, destroyed during Israeli air raids in the southern Gaza Strip on November 7, 2023 in Khan Yunis, Gaza (Photo by Ahmad Hasaballah/Getty Images); A fireball erupts during Israeli bombardment of Gaza City on October 9, 2023 (Photo by Mahmud Hams/AFP via Getty Images); The International Court of Justice (ICJ), the principal judicial organ of the UN, holds public hearings on the request for the indication of provisional measures submitted by South Africa in the case South Africa v. Israel on 11 and 12 January 2024, at the Peace Palace in The Hague, the seat of the Court (Photo by the International Court of Justice).

Just Security’s Israel-Hamas War Archive

Just Security's collection of more than 110 articles covering the Israel-Hamas War and its diplomatic, legal, and humanitarian consequences.
A person wearing a Panamanian flag steps on a U.S. flag.

Upending the International Order: Why Undermining the UN Charter and US Defense Commitments is Self-Defeating

The President should understand that bellicose threats and unreliability as an ally may leave the United States poorer and more vulnerable on his watch and will frustrate his nuclear…
Kyiv buildings at night with explosions in the sky

The Voices from Kyiv: Is the World Legal Order in Decay?

The Russian invasion of Ukraine, and states’ reactions to it, are setting the stage for possible changes to the international legal order. In the end, this is a battle for a…
Kyiv buildings at night with explosions in the sky

Голоси з Києва: чи це епоха руйнування світового правопорядку?

Існують різні переломні точки в історії, які визначили метаморфозу міжнародного правопорядку.
US Marine Corps hang barbed wire

U.S. Military Action in Mexico: Almost Certainly Illegal, Definitely Counterproductive

U.S. military action in Mexico would not only be illegal, it would sabotage Trump’s stated immigration policy priorities and could lead to retaliation against Americans.
Marco Rubio on stage at Trump Rally

Questions for Senators (and Journalists) to Ask Secretary of State Nominee Marco Rubio

Experts suggest questions for the Senate Foreign Relations Committee's confirmation hearing for Trump's pick for Secretary of State, Sen. Marco Rubio.
F-35 fighter aircraft against blue sky with two white contrails.

Making Sense of International Law in Light of Israel and Iran’s Latest Round of “Retaliation”

The current round of retaliatory strikes between Israel and Iran casts light on Israel's and Iran’s opposing political strategies, which also have significant legal implications…

Rethinking Responsible Use of Military AI: From Principles to Practice

Highlights from the second global summit on Responsible AI in the Military Domain (REAIM) in Seoul, South Korea.
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