Final Demand or Proposal
This page is the CodyCross answer for the clue below from Greece, Group 675, Puzzle 1 (Mykonos Windmills).
Question is: Final Demand or Proposal
and the answer is: ULTIMATUM
Word Meaning:
ULTIMATUM — (diplomacy) A final statement of terms or conditions made by one party to another, especially one that expresses a threat of reprisal or war if the terms are not met before some specified date and time.
Definitions from Wiktionary.