Run-up to war

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Across
  1. 3. Non-aggression agreement between Molotov and Ribbentrop
  2. 5. The invasion by Germany of this country finally triggered war
  3. 6. German city where peace agreement was signed
  4. 8. The policy of agreeing to Hitler's demands was known as ----
  5. 9. British prime minister who brought back 'peace with honour'
  6. 11. The new German fastmoving approach to war
  7. 12. Disputed area of Czechoslovakia handed to Germany
Down
  1. 1. American president at this time
  2. 2. Forested area on French border where German tanks broke through
  3. 3. German tank name
  4. 4. German chancellor
  5. 5. The first few months of the war saw little activity, so the war was nicknamed the ----
  6. 7. Polish port seized by Germany sparking off WW2
  7. 10. Fortified line on France's eastern border