If the Nazis were "nationalists" why didn't they stay within their boarders?

[Thunderous Barbarian]

Why did they want a global empire through socialism like today's progressives also do?

They wanted a complete totalitarian socialist world government just like today's socialists do. Is it ignorant of today's social fascists to call Nazism a phenomenon of the "right"? Both Nazis and progressivists call themselves "Third-way" moderates and in their nearly identical concepts of mixed-economy socialism... they are part way between Communistic socialism and free market capitalism.

Wouldn't it be honest if they just took full responsibility for what their National Socialist brethren did and admit that their current anti-Zionism and hatred of Jews stems from that same source?
@for the historically ignorant ~ Fascism IS a form of socialism. It is THEE form of socialism and communists rightly branded one another "fascists" whenever they disagreed with each other because there it so little difference between "fascist socialism" and "communistic socialism" in practice as to make any ideological minutia negligible.