ultimatum

IPA: ʌɫtʌmˈeɪtʌm

(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.
(diplomacy, dated) An intended final statement of terms or conditions made by one party to another in a negotiation.

Examples of "ultimatum" in Sentences

In the morning she gave him what she called an ultimatum.
Yahoo responded with a letter of its own in which it called his ultimatum "counterproductive."
If the ultimatum is not at once accepted we may look for that dreadful catastrophe, a sex war.
His upset, the doctor recorded, was “due to what he termed an ultimatum that had been served upon him by Bulganin.”
I'm sure Obama will consider Senator Clinton, however, this divisive public ultimatum is not helpful to the party to win in November.
The opposition Armenian National Congress has called a protest for March 17, after delivering the government what it called an ultimatum earlier this month.
Now, that's not a market force, that's not cheap labor; that's an ultimatum from the Chinese government saying 'you want to sell here, you gotta produce here.'