Sentence:  `` Quoting Mr. Kennan 's phrase that anything would be better than a policy which led inevitably to nuclear war , he [ Toynbee ] says that anything <WSD>is</WSD> better than a policy which allows for the possibility of nuclear war '' . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)