Sentence:  If we stop thinking in terms of tremendous multimegaton nuclear weapons and consider employing much smaller nuclear weapons which may <WSD>be</WSD> more appropriate for most important military targets , it would seem that the B-52 or B-70 could carry a great many small nuclear weapons . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)