On a gray and chilly morning last week, a Royal Air Force Lockheed L-1011 TriStar became the first wide-bodied passenger jet to land on the Falkland Islands, marking the start of regular air service from London. Then Britain's Prince Andrew officially opened the islands' still unfinished Mount Pleasant airport. Almost half the Falklands' 1,850 residents jostled for a view of the royal occasion; there was even a 10-ft.-long commemorative cake. But some of the reactions to the $345 million airport were not as sweet as the cake.
Argentina, which is eager to resume talks with Britain about the islands' sovereignty after...