The Soviet Union, which feared Western powers and the possibility of "capitalist encirclements", had little faith either that war could be avoided, or faith in the Polish army, and wanted nothing less than an ironclad military alliance with France and Britain that would provide a guaranteed support for a two-pronged attack on Germany; thus, Stalin's adherence to the collective security line was purely conditional. Britain and France believed that war could still be avoided, and that the Soviet Union, weakened by the Great Purge, could not be a main military participant, a point that many military sources were at variance with, especially Soviet victories over the Japanese Kwantung army on the Manchurian frontier. France was more anxious to find an agreement with the USSR than was Britain; as a continental power, it was more willing to make concessions, more fearful of the dangers of an agreement between the USSR and Germany. These contrasting attitudes partly explain why the USSR has often been charged with playing a double game in 1939: carrying on open negotiations for an alliance with Britain and France while secretly considering propositions from Germany.
What country was at war with Japan in China prior to World War II?
Soviet Union

The presence of pain in an animal cannot be known for certain, but it can be inferred through physical and behavioral reactions. Specialists currently believe that all vertebrates can feel pain, and that certain invertebrates, like the octopus, might too. As for other animals, plants, or other entities, their ability to feel physical pain is at present a question beyond scientific reach, since no mechanism is known by which they could have such a feeling. In particular, there are no known nociceptors in groups such as plants, fungi, and most insects, except for instance in fruit flies.
What about pain in an animal isn't able to be known with certainty?
presence

Following the German unconditional surrender, Eisenhower was appointed Military Governor of the U.S. Occupation Zone, based at the IG Farben Building in Frankfurt am Main. He had no responsibility for the other three zones, controlled by Britain, France and the Soviet Union, except for the city of Berlin, which was managed by the Four-Power Authorities through the Allied Kommandatura as the governing body. Upon discovery of the Nazi concentration camps, he ordered camera crews to document evidence of the atrocities in them for use in the Nuremberg Trials. He reclassified German prisoners of war (POWs) in U.S. custody as Disarmed Enemy Forces (DEFs), who were no longer subject to the Geneva Convention. Eisenhower followed the orders laid down by the Joint Chiefs of Staff (JCS) in directive JCS 1067, but softened them by bringing in 400,000 tons of food for civilians and allowing more fraternization. In response to the devastation in Germany, including food shortages and an influx of refugees, he arranged distribution of American food and medical equipment. His actions reflected the new American attitudes of the German people as Nazi victims not villains, while aggressively purging the ex-Nazis.
In what city was the headquarters of the US Occupation Zone located?
Frankfurt am Main