 Complete the following phrase:  The Soviet Union may have easily been considered a silent partner of the Axis at the time. It was never a signatory to the Pact of Steel the original Axis Pact, and obviously inimical to the Anti-Comintern Pact. Yet its relationships with Nazi Germany were  at least at the surface  more friendly than either countrys with the US. The USSR had joined Germanys September 1, 1939, invasion of Poland in mid-September, and the countries had treaties of economic assistance and cooperated in military research. However, just one month before Ill Never Heil Again was released, 