A territorial wound that has never fully healed reopened this week as Argentina's President Milei invoked Donald Trump's ambiguous remarks to press a renewed claim over the Falkland Islands, those remote South Atlantic specks that cost both nations dearly in 1982. Britain's ministers responded with the language of principle — self-determination, international law, the expressed will of the islanders themselves — but beneath the legal vocabulary lies a more unsettling question: whether the American security guarantee that has long underpinned the post-war settlement is truly as solid as London