𝕌.𝕊. 𝕊𝕖𝕟𝕒𝕥𝕠𝕣𝕤 𝕡𝕣𝕠𝕡𝕠𝕤𝕖 𝕚𝕟𝕧𝕠𝕜𝕚𝕟𝕘 ℕ𝔸𝕋𝕆 𝔸𝕣𝕥𝕚𝕔𝕝𝕖 𝟝 𝕚𝕗 ℝ𝕦𝕤𝕤𝕚𝕒 𝕟𝕦𝕜𝕖𝕤 𝕌𝕜𝕣𝕒𝕚𝕟𝕖!!

• Collective defence means that an attack against one Ally is considered as an attack against all Allies.
• The principle of collective defence is enshrined in Article 5 of the Washington Treaty.
• NATO invoked Article 5 for the first time in its history after the 9/11 terrorist attacks against the United States.
• NATO has taken collective defence measures on several occasions, including in response to the situation in Syria and the Russian invasion of Ukraine.
• NATO has standing forces on active duty that contribute to the Alliance’s collective defence efforts on a permanent basis.

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