Hungary was never part of the Soviet Union, though it was subjugated by the invasion.
> Ukraine is independent.
Not in any meaningful sense if it lets Russia dictate that it can not secure itself against Russia.
> Russia needs Ukraine as a buffer between NATO.
Yeah, when countries tell you they need your country for elbow-room, that’s not a positive sign of how the relationship is going to work out. Did you learn nothing from 20th Century Europe?
Also, what Russia is trying to build with a swathe through Eastern and Southern Ukraine and into Eastern Moldova isn’t a neutral buffer state, its an expanded Russian ethnonationalist state (or, at a minimum, a set of Russian ethnonationalist puppet states.)
> Also, being Neutral doesn’t mean being disarmed
Yeah, which why it is extraordinarily dishonest to portray Russia’s demands for Ukrainian demilitarization as mere demands for neutrality.
Hungary was never part of Soviet Union.
Hungary was theoretically independent, member of Warsaw pact, and Russia claimed it under its sphere of influence.