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NATO

North Atlantic Treaty Organization

Updated 7 November 2026

The transatlantic collective-defence alliance: an armed attack on one member is treated as an attack on all under Article 5, invoked once — after 11 September 2001.

Key facts

Founded
1949
Headquarters
Brussels, Belgium
Members
32 states
Secretary-General
Mark Ruttesince October 2024
Last summit
7 July 2026Ankara, Türkiye
The UAE
Istanbul Cooperation Initiative partner since 2005
UAE trade with members (2025)
$158.4 billion

Member states