What sanctions did Milei threaten against Falklands oil?

Milei has said he will impose economic sanctions on oil companies operating in waters off the Falkland Islands, which he calls "usurped" Argentine territory. In a televised address he singled out the Sea Lion oilfield, jointly worked by British firm Rockhopper Exploration and Israeli firm Navitas Petroleum, which is due to start production [1, 2, 3]. He framed the move as restating Argentina's long-standing claim to the islands, saying "the Falklands are our future" [3].