Sentence:  Whether any of us remain in it long will depend on what happens as a result of the technological and economic revolutions now going on in the countries of Asia and Africa , and also of course on how <WSD>long</WSD> the cold war remains cold . 
Meaning of the word marked with <WSD> tags:  primarily temporal sense; being or indicating a relatively great or greater than average duration or passage of time or a duration as specified