You would for the sake of hurt pride and loss of some oil revenue destroy your own country? Not to mention killing possibly millions of human beings who don't even care about the issue? Thank God there have until this day been no other nukes used since America destroyed Hiroshima and Nagasaki. It seems the horror of that lesson is fading in the modern world and THAT is frightening. If anyone uses them for any reason it will open a Pandora's Box of evil that will be unspeakable in it's consequences. I predict that even if America lost a city to a terrorist nuke, we would not necessarily respond with a nuke. To be sure, there would be very grave consequences and a horrific death count but with conventional forces I think...
No, nukes cannot ever be used again. If they are then no one anywhere will be safe.
If a nation attacks my people then all responses should be on the table including the nuclear option.
If Argentina is sabre rattling because it wants a share of the oil it wont succeed. If it wants onboard it should be making friends with us instead and repairing the damage that it did with the first war. Britain doesnt give in to threats or hostile behaviour.