Sentence:  After declaring , in an article last month in Frontier magazine , that the Russian testing `` carries with it the possibility of the most tragic consequences of any action in the history of the world '' , he <WSD>gave</WSD> this estimate of the biologic and genetic consequences if the new Soviet shots totaled 200 megatons : 
Meaning of the word marked with <WSD> tags:  be the cause or source of