Sentence:  Vague in wording , it called for withdrawal of Belgian troops and authorized the Secretary-General `` to take the necessary steps to provide the [ Congolese ] Government with such military assistance as may be necessary , until , through the efforts of the Congolese Government with the technical assistance of the United Nations , the national security forces may <WSD>be</WSD> able , in the opinion of the Government , to meet fully their tasks '' . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)