On May 30, 1967, Jordan's King Hussein signed a mutual defense pact with Egypt in Cairo, placing Jordanian forces under Egyptian command, and Iraq joined the alliance shortly afterward.
Notes on verification
Corroborated by multiple independent sources including academic (Cambridge), historical analysis (MEF), and reference sources (Jewish Virtual Library, Washington Times). Date, location, and key details align, with minor variance on exact Iraq accession date (June 4 vs immediate) resolved as 'shortly afterward.' [tier=gold indep_score=0.9 clusters=4 claim_tier=notable] [kind-backfill 2026-09-15: kind=empirical eligibility=high]
Sources
- Six-Day War | Definition, Causes, History, Summary, Outcomes ... (seed:history_and_archaeology)
- https://jewishvirtuallibrary.org/myths-and-facts-the-1967-six-day-war (corroboration)
- https://www.meforum.org/middle-east-quarterly/an-inevitable-conflict (corroboration)
- https://www.cambridge.org/core/books/jordan-in-the-1967-war/on-the-brink-of-war/0DBC309748314E70119675D0E1BFC737 (corroboration)
- https://jewishvirtuallibrary.org/intelligence-during-the-six-day-war-1967-2 (corroboration)
- https://www.washingtontimes.com/news/2017/may/31/six-day-war-50th-anniversary-shows-arabs-still-wan/ (corroboration)