Article 5 has been invoked once, the US invoked it during 9/11. They asked for some extra air reconnaissance around the middle east, and basically to have allies be ready for joint action that never materialized. Article 5 is not an immediate declaration of war or anything.
Article 5 has been invoked once, the US invoked it during 9/11. They asked for some extra air reconnaissance around the middle east, and basically to have allies be ready for joint action that never materialized. Article 5 is not an immediate declaration of war or anything.
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