We are prepared to leave the Falklands unprotected other than a Battalion, 4 Typhoons and a Frigate/Destroyer.
I'm not qualified to comment on you other points, but that's hardly what I'd call unprotected, especially when seen in light of what the Argies have to pit against it.
Argentina has less than 30 fighters and about 35 ground attack jets, none of which are less than 30 years old and with the exception of the A-4AR Fightinghawks, none of them have seen any significant upgrades since the mid eighties. And none of them have the range to attack the Falkland Islands and get back without tanker assistance, of which they have a grand total of two. In other words, their capacity to strike against the Falklands are worse than they were 30 years ago.
All this means that they'll need to rearm significantly before even thinking about an invasion, and considering how they've been forfeiting their national depts left and right I doubt they have the money to do so, or the international goodwill to borrow them.
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