Argentina’s budget-slashing leader Javier Milei pulled off a stunning win in Sunday’s midterm elections, boosting the flagging reform agenda of the US-backed right-winger. Milei’s La Libertad Avanza (LLA) party rebounded from a series of setbacks to win 40.84 per cent of the votes cast for members of Congress, official results based on 90 per cent of votes counted showed. The centre-left Peronist movement, which had been riding high after winning last month’s Buenos Aires provincial elections,...