They can try to invade by air or sea. Troop transport aircraft would be sitting ducks for AA missiles and the Typhoons. It would be a slaughter, absolute suicide. I don't think the Argentine Navy would chance an invasion if it even suspected there was a nuclear sub lurking in the area. They remember the Belgrano.
Fortunately, the Argentinian air force was never really rebuilt. It’s fighters are 8 Mirage III and 14 upgraded IAI Nesher/Finger and the bombers are 7 Mirage 5 and 34 A4 skyhawks.