He already had simpaties for Mussolini and italian fascism, with not a few similarities with peronism; OTL, Peron simply never stated to be a fascist or a caudillo (he despised being called that). Add that Peron wanted to release Argentina from USA orbit. Lastly, peronism never was antisemitic. Rather, it helped the newborn Israel, which led to the visit from prime minister Golda Meir in 1951. ITTL Italy and OTL Argentina are just a match made in heaven.