Sentence:  WikiLeaks did not cause these uprisings but it certainly informed them. The dispatches revealed details of corruption and kleptocracy that many Tunisians suspected, but could not <WSD>prove</WSD>, and would cite as they took to the streets. They also exposed the blatant discrepancy between the west's professed values and actual foreign policies. 
Meaning of the word marked with <WSD> tags:  To demonstrate that something is true or viable; to give proof for.