Explain why Hitler and Stalin signed a non-aggression pact?

Hitler wanted a non-aggression pact because he wanted to invade Poland without having a major power disagreeing with it. He then could deal with france and britian without having to fight the Soviet Union in the east side.

Explanation:

Thirty years ago, in June 1981, AIDS first appeared in the United States as a recognized condition and for the next 15 years, a diagnosis of AIDS was basically a death sentence. Advances in treatment since then have made it a manageable, chronic disease. The AIDS epidemic was accompanied by a spike in what would come to be called “AIDS-defining cancers:” cervical cancer, non-Hodgkin’s lymphoma and Kaposi’s sarcoma, sometimes known as “gay cancer.”