The year was 1939, the season was summer, and things were moving fast. And nowhere good. The Germans, for months, had claimed the Polish government was either aiding, or putting up with, ethnic cleansing of Germans living in Poland. This was more than saber-rattling. The Germans were making territorial demands. And the world was caving. Appeasement was the answer from the West. The Allies hadn't learned their lessons yet.
If peace talks fail, the Russian military has several options to invade Ukraine through northern, central, and southern routes, raising critical questions for the United States and its NATO allies according to analysis by the CSIS International Security Program.