Also...what's up with Milei being so extremely pro-Israel?

1. Milei openly professes judaism, even quotes the Torah in his presidential speeches. He considers Judaism to be the highest form of religion because it's the one that aligns the most with his libertarian tenets, which is true. You can tell that he's very vehement on what he believes in so, as much as he has been vehement on his economical and political tenets, he will be on his religious ones. I'm atheist personally, so I really, really don't care, as much as people in general don't care for as long as he accomplishes his objectives.
2. Milei holds as the very basis of the fight for freedom the need for what he calls "the cultural battle", in the sense that no sane governmental or economical scheme is possible in a society that do not aligns in its core principles with those schemes, so society must be first naturally predisposed. To ensure that, society must be educated on the principles of liberty, but at the most fundamental core, it's religion the one that leads the way. If the religion of a society conflicts with the idea of freedom, said society will, even if well versed on the tenets of freedom, naturally drift towards totalitarianism. So, while he personally made that decision, he tries to have an influence on people to induce at least a level of religiosity around the idea of freedom, which has already developed among the youth in the shape of a pseudo religion, what the youth calls "the forces of heaven". I'm an engineer, and the religion of an engineer is engineering, so I really don't care, but I fully understand and, honestly, support, his view.

3. Argentina has an extremely dirty past: 3.1 By the end of WWII the nazis planned to revive the Reich in and from Argentina, so it's well documented that numerous submarines brought a lot of gold and high ranking officers to the country and initiated nazi cells that survived decades long after the end of WWII. Even Himmler was found here being part of one. So, while the USA may have retrieved scientists from germany, we here retrieved high ranking officials directly responsible for the mass murders in the concentration camps. Himmler being the most famous case. In the province of Cordoba there are the ruins of an hotel where those high ranking officials famously used to hang out, and there is still today serious suspicion that even Hitler himself might have been one of them. 3.2 During the 90's, muslim terrorist cells commanded directly from Iran infiltrated Argentina under very difficult to justify conditions (specially since the president at the moment, Menem, was muslim himself), and blew up the Israel Embassy, killing 85 people. The Kirchnerist regime later signed a Memorandum with Iran in which it agreed not to keep pursuing legal actions against the terrorists, which where already identified by the time. Cristina Kirchner, the one responsible for it, was about to be sent to court for high treason due to that, but she commanded the assassination of the attorney responsible for the case, Nisman, the night right before. As she did it under his regime, the investigation of Nisman assassination never took off. 3.3 So, Milei has very, very, very good reasons to be willing to have the closest relationship possible with Israel in order to sort all of this mess out. Israel in turn is the only force that can provide him with the intelligence services needed. Results were immediate, as right in the first year of his mandate a local muslim terrorist cell was terminated. And there have to be many, many more things that will remain secret.