For the fourth consecutive year, in 2019 the Harvard Law School Program on International Law and Armed Conflict (HLS PILAC) led a series of informal research briefings at Missions to the United Nations in New York. The briefings provided an opportunity for legal advisors to an array of diverse Missions to informally engage with recent academic research. The informal series was hosted by the Missions of Belgium, Liechtenstein, Norway, Mexico, and Switzerland. Between April and October, HLS PILAC Director and HLS Professor of Practice Naz K. Modirzadeh gave briefings over working lunches on the following topics:

• The Identification and Development of Customary International Law concerning the Principle of Non-Use of Force in International Relations;

• The Principle of Non-Intervention: Enduring and Emerging Concerns in respect of Contemporary Armed Conflicts;

• The Principles of the Non-Use of Force and of Non-Intervention: Metamorphosing Roles and Responsibilities of the Security Council?;

• The Prohibition of Aggression and the Crime of Aggression: Select Contemporary Opportunities and Challenges;

• The “Wall” between Jus Ad/Contra Bellum and Jus in Bello: Enduring and Emerging Concerns; and

• The Principle of the Non-Use of Force and the Legal Framework Governing Terrorism: Overlaps, Similarities, and Incongruities.

Webpage last updated: October 2019.