Right, what does any of that have to do with the Torah world opposing the state? See above regarding the UN. The oaths don’t depend on what some goyim say. There are alsp opinions that hold that it doesn’t matter if all of them agree.
Ubiq, תחת אשר לא עבדת את ה אלקיך בשמחה…. Isn’t a din either, yet national calamities occur because of it. Rav Belskys pshat is very simple, but you’re being dismissive. Not being a din doesn’t mean “case closed.” Hashem reveals to us in the Torah, through chachamim, what He wants us to do. And that includes our behavior in Galus.
Chazal learned the parsha of Yaakov and eisav before meeting with the Roman rulers, to learn and remind themselves of the yesodos, the ways one must behave in galus to be safe.
Now is that hanhagah – giving gifts, flattery, etc…is that a din? No. It’s how Hashem taught us, through the example of Yaakov avinu, our heiligeh zaydeh, who was the first yid in galus.
So too, the oaths are a pathway to security when dealing with goyim, and they are not to be taken lightly…. Hashem himself said He would permit our flesh to be hunted….din or not, it’s extremely important. Go over this a few times, let it marinate, because you’re coming from a perspective of “no din? No problem!” which is not how chazal teach us. There are other such examples, including a menuval bershus hatorah.
Regarding why Jews were targeted in Europe, gedolim would often ask why. Tach vetat was explained to the tosfos yom tov in a shailas chalom from shomayim, that it was due to talking in shul. The chofetz chaim said trouble in his days was due to chilul shabbos and lashon hora.
No gedolim ever go with “well there’s always antisemitism so we don’t know why X happened, because look, Y people were better about it and yet they still were punished”
Learn the chofetz chaims seforim on this. Look at the warnings about the Holocaust from the meshech chochma and others. This attitude you picked up in the baalebatish circles is not the way gedolei yisroel think; it’s intellectual laziness.