Long-lost diary by Hitler's top aide posted online

Hundreds of hand-written pages from the long-lost diary kept by Alfred Rosenberg- a top aide to Adolf Hitler- has been published for the first time by the U.S. Holocaust Memorial Museum.

According to museum officials, the pages, which will offer new insight into Hitler's inner circle and Nazism's ideological development, are approximately 400 in total and currently available only in German, ABC News reported.

A historian at the museum told the publication that it has a lot of potential to broaden the understanding of the Nazi past.

The source said it will shed light on a key player in the Nazi past and when you look at what was going on at the time, you can see how active his staff was to determine policy.

Rosenberg, who was an early and highly influential member Hitler's Nazi party, was the architect of important tenets of Nazi ideology, including racial theory, persecution of the Jews, and lebensraum.