Sentence:  Seeing the British establishment struggle with the financial sector is like watching an alcoholic [...].  Until 2008 there was denial over what finance had become. [...]  But the scandals kept coming, [...]. A broad section of the political class now recognises the need for change but remains unable to see the <WSD>necessity</WSD> of a fundamental overhaul. 
Meaning of the word marked with <WSD> tags:  (quality or state of being necessary, unavoidable, or absolutely requisite) The quality or state of being necessary, unavoidable, or absolutely requisite. (en)