What is the ruling on saying "I am divorced if the situation does not calm down," and what is the ruling on uttering euphemisms for divorce, and what is the ruling on saying "if this happens again, it will be the final divorce," with the intention of threat and not actualizing it?

Your statement to your wife, "You are divorced if the situation does not calm down," is a conditional divorce. If the condition is met, one divorce takes place, and you may take her back during her 'iddah (waiting period) unless it was the third divorce. An exception to this is a state of extreme anger where the divorcer does not comprehend what he is saying, or anger compels him to divorce.

As for your statement, "If this recurs, it will be the last divorce," this is a threat of future divorce, not a conditional divorce, and no divorce occurs by it unless you carry out what you threatened.

It is advisable to avoid using divorce pronouncements except when there is a desire to terminate the marriage.