Comment: No, only between Europe and

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In reply to comment: Is there a pact (see in situ)

No, only between Europe and

No, only between Europe and USA.
The Falkland Islands are a territory of England.
If a NATO member is attacked the other NATO members are bound by the treaty to help.
That is why after the 9/11/2001 NATO is fighting in fighting over in Afghanistan to support the USA who was attacked. It is also why NATO supplied AWACS aircraft to patrol along the USA after 9/11/2001 for a few months.