Well, it turns out all unwavering support for a nation because of the etnicity of the people who live there (i.e. "The Jewish Nation") is still racism and entirelly anchored in the very same racist way of thinking as was historical in the nations providing said support (it's quite interesting how the nations which are the biggest supporters of Israel pretty much all have histories of extreme racism and genocide against other etnicities).

That whole "support for The Jewish Nation" thing could be passed as "positive" discrimination (as if the positive for some doesn't have a complementary negative "denial of equal treatment for those not of the right etnicities") up until the point the self-apointed representatives of the etnicity those nations discriminate in favour of, went full-on Nazi and started massacring people on etnic lines all accompanied with the same kind of wording and propaganda that Goebbels used.

That the nations doing that "positive discrimination" didn't stop it when their support suddenly became the means for very overt, very cold anti-Palestinian and even anti-Muslim racist extreme violence, and in fact even doubled-down on Nazi-style propaganda against their own populations to defend it, for me shows how deep down at least the elites those nations never stopped being profoundly racist.

Looking at it from that point of view, the explanation for, for example, Germany's behaviour is actually quite simple: their elites never stopped being racist and even seeing mass murder along etnic lines as acceptable, they just changed the etnic groups they favour and disfavour and became better at hidding their prejudices, at least when it came to etnicities which was not politically correct to discriminate against - if their relation towards other human beings still follows the very same mental framework as almost a century ago (only with different ubermenschen and untermenschen) their continued support of Israel, even when they go on a full-on Nazi-style genocide, is entirelly natural.