Lebensraum was a Nazi concept, not a "german" one. Since Israel is (supposed to be) a democracy, it looks like we would have more reason now to call it a "jewish" concept since the people are supporting it while still being able to vote the government out of office if they would change their mind. The germans did not have the opportunity anymore once they made the horrible mistake of electing criminals. And BTW, going for more "Lebensraum" was never written on the election posters of the Nazis, and neither was the holocaust.
Supreme Court rejects plea for freeze on expansion of asylum seekers' detention (Haaretz)
from the article: Lebensraum as a justification for Israeli settlements