Sentence:  The problem in the policy officer 's mind thus begins to take shape as a galaxy of utterly complicated factors - political , military , economic , financial , legal , legislative , procedural , administrative - to be sorted out and handled within a political system which moves by consent in relation to an external environment which cannot <WSD>be</WSD> under control . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)