UN Charter
217 Articles

If Mattis Meant to Assert Self-Defense for the Syria Strike, He Was Wrong
Since the United States conducted a military strike on various targets associated with the Syrian government’s chemical weapons program last week, prominent voices in the legal…

The Real “Red Line” Behind Trump’s April 2018 Syria Strikes
Former State Department Legal Adviser Harold Koh writes that strikes on Syria could be legal, but key unanswered factual questions remain about April's operation. What's also missing…

Syria, Chemical Weapons, and a Qualitative Threshold for Humanitarian Intervention
An improved legal framework using a qualitative threshold—legitimizing humanitarian intervention against regimes that use chemical and biological weapons (CBW) on civilians—can…

Collective Self-Defense and the “Bloody Nose Strategy”: Does it Take Two to Tango?
The Japanese people and their government have reason to be nervous. Last year, North Korea conducted two ballistic missile tests over Japan. If that was not enough, the U.S. Government…

Best Advice for Policymakers on “Bloody Nose” Strike against North Korea: It’s Illegal
In this image provided by the South Korean Unification Ministry, the head of South Korean delegation Lee Woo-Sung shakes hands with the head of North Korean delegation Kwon Hook-Bong…

Recent Israeli Strikes on Syria and the Prohibition on the Unilateral Use of Force
An Israeli F-16 jet takes off on December 9, 2014 at the Ovda airbase in the Negev Desert near Eilat, southern Israel. (Lior Mizrahi/Getty Images) On Tuesday, January 9, Israel…

U.S. “Confronting” Iran inside Syria: Spoiling for an Unlawful Fight?
Russian President Vladimir Putin and Iranian President Hassan Rouhani meet during the BRICS/SCO Summits – Russia 2015 on July 09, 2015 in Ufa, Russia. (Photo by Alexey Filippov/Host…

The Important Legal Questions Regarding the Now-Shuttered “Covert” Program to Arm Syrian Rebels
Mark Mazzetti, Adam Goldman and Michael Schmidt report: The end came quickly for one of the costliest covert action programs in the history of the C.I.A. During a White House briefing…

On Israeli Airstrikes in Syria—Lawful and No Need for Transparency
In his post “Israeli Airstrikes in Syria: The International Law Analysis You Won’t Find,” Asaf Lubin is perplexed by the dearth of discussion by what he describes as jus…

On N. Korea: Calling on Congress and the President’s Advisers to Defend the Constitution
For those of us who had hoped Defense Secretary Jim Mattis and Lt. Gen. H. R. McMaster, the president’s national security advisor, would make up for the inexperience and curb…
Would airstrikes against Assad be lawful and effective?: Reactions to the State “dissent cable”
Editor’s note: This post also appears on Lawfare. As you have probably read, 51 career foreign service officers in the State Department have written an internal memorandum recommending…
Moves toward greater transparency on the use of lethal force [UPDATED]
Unless I’m overlooking something, this weekend’s strike directed at Taliban leader Mullah Akhtar Muhammad Mansur, in the province of Baluchistan, was only the second…