"But how would you explain the attacks on Poland, Denmark, Norway etc etc? That was all because Hitlers idea's about the glory of National Socialism, and a great Germany, so it was Nationalism, not ethic solidarity."
I'm not seeing how nationalism is a different motive than ethnic solidarity. Hitler's aim was a greater Germany, with all Germans living in one country.
"But how would you explain the attacks on Poland, Denmark, Norway etc etc?"
The attack on Poland was about taking Danzig, and since Poland resisted he got the added "bonus" of the old Prussian cities that had been transferred to Polish rule after WWI. The invasions of Norway and Denmark had more to do with the overall strategy of defeating Britain and France, particularly Britain. Germany felt that if it had bases in Norway during WWI it would have won the naval war then. Britain itself was violating Norwegian neutrality so there really wasn't any moral outrage about it.
Georgia is not a Balkan country, so I was referring to Serbia and why Russia went to its aid. Turkey joined the Central Powers well after the July crisis, so I don't see control of the Dardanelles as the primary motive. Although of course that is what they wanted in 1908, but the principle opponent to that move had always been Britain anyway.
As for outright annexing Soviet territory up to the Urals, I'm not sure about that. Surely in Mein Kampf he didn't suggest this, but a ring of pro-German statelets much like the period after Brest Litovsk for sure, and with German ruling classes of course. That's effectively what the European Union is now in that there is a bunch of Germanized statelets in eastern Europe that act as cheap labor for German manufacturing from which they dump their exports on the rest of the world and from which German banks can completely control their economies.