Joint communication UA USA 20/2025 concerning U.S. military strikes on Iran

Claims supported by this source

1. analysisreported

   Operation Midnight Hammer was conducted without advance congressional authorization; the administration invoked Article II and sent Congress a War Powers Resolution notification, while analyses from Just Security, the Brennan Center, and POGO argued that the operation required congressional authorization.

   Article I/II and War Powers Resolution analysis

   Operation Midnight Hammer proceeds without advance congressional authorization · War-powers basis disputed; no merits judgment · reviewed 2026-09-03

2. analysisreported

   The United States invoked collective self-defense under U.N. Charter Article 51 for Operation Midnight Hammer; U.N. special-procedure mandate holders said the strike appeared to violate Article 2(4), and Just Security's Brian Finucane concluded the U.S. letter did not establish the required armed-attack predicate, necessity, or proportionality.

   UA USA 20/2025 pages 2–5; Just Security Article 2(4), Article 51, necessity, and proportionality sections

   U.S. Article 51 defense of Operation Midnight Hammer draws sustained legal challenge · Contested legal analysis; no adjudication · reviewed 2026-09-03