Solve these clues to fill the grid.
- A city of central European Russia
- 4 Across
- French capital with the Eiffel Tower
- 6 Across
- European country whose capital is Berlin
- 8 Across
- North American republic containing 50 ___ - 48 conterminous ___ in North America plus Alaska
- 9 Across
- To attack suddenly and without warning
- 13 Across
- The capital and largest city of England
- 15 Across
- Boot-shaped country in Europe famous for pasta
- 16 Across
- The capital and largest city of Poland
- 1 Down
- Strong sealed vessel for measuring heat of combustion (plural)
- 2 Down
- European country famous for the Eiffel Tower
- 3 Down
- The capital of the United States in the District of Columbia and a tourist mecca
- 5 Down
- A city in north central France near Paris
- 7 Down
- A mountainous republic in central Europe
- 10 Down
- Island country in Asia with Tokyo as its capital
- 11 Down
- German Nazi dictator during World War II
- 12 Down
- An enclosed armored military vehicle
- 14 Down