Was WW2 in Europe Justified?

[sharrukin]

You stated the difference in your question. Occupied and signing an imposed treaty significies force being applied. Germany knew it was going to lose WW1, and instead of fighting the war to its bloodly end - Germany chose to go with the Treaty.

Germany incurred the obligation to abide under another treaty in which Germany signed - called the Hague Treaty of 1907.

France and all those other nations did the same thing. They signed a treaty rather than go on fighting. The Versaille treaty was imposed if any treaty ever has been.