Argentine President Javier Milei has launched a new effort to claim control of the Falkland Islands, reigniting a long-standing dispute with the United Kingdom over the archipelago, which once led to war.  "THE MALVINAS WERE, ARE, AND ALWAYS WILL BE ARGENTINE,” Milei said in Spanish on X on Friday, using the Argentine name for the islands.   In a separate interview with the Argentine digital channel Neura posted by Milei on Friday, he said that the country was doing “everything humanly possible” to return the Falklands to Argentina.  “Sovereignty is non-negotiable, but it must be handled judiciously, with brains,” said Milei, a staunch ally of President Donald Trump.  The Falkland Islands are a small group of islands some 300 miles east of Argentina, with a population of around 3,600.  Both Britain and Argentina have historic claims to the islands, and the two countries fought a short but fierce war in 1982 after Argentina tried to seize control of them.…