1. The country the USSR unsuccessfully attempt to invade in 1940.
2. The number of countries in the Eastern bloc USSR.
3. A treaty of non-aggression between Germany and the Soviet Union.
4. The border the Soviet Union invade Poland from.
5. The permanent acquisition and incorporation of some territorial entity into another geo-political entity.
6. Name of the former communist states of Central and Eastern Europe, generally the Soviet Union and the countries of the Warsaw Pact.
7. Shorthand for Union of Soviet Socialist Republics.
8. Area which was in territorial conflict during both World War One and Two.
9. The demand by Soviets for Lithuania and Romania to surrender.
10. Name of mutual defense treaty between the eight communist states of Europe.
Communism / A political theory derived from Karl Marx, advocating class war and publicly owned property, with each person working and being paid according to their abilities and needs.

Some of the puzzles that people list for the public get indexed by the search engines (like Google). Some people find those puzzles and cannot figure out how to make a puzzle of their own. So this page now has the navigation sidebar.

There are now buttons on the puzzle so that you can get a clean page, in either HTML or PDF, that you can use your browser's print button to print. The PDF format allows the web site to know how large a printer page is, and the fonts are scaled to fill the page. The PDF takes awhile to generate. Don't panic!