In reply to @cubacenter

16 days later the Soviet Union, exercising its secret agreement with the Germans, invaded Poland from the East. https://cubacenter.org/cuba-brief/2024/08/24/cubabrief-observing-black-ribbon-day-in-remembrance-of-victims-of-totalitarianism-and-the-35th-anniversary-of-the-baltic-ways-nonviolent-triumph/ 7/