A report by two academics / advocates (one of whom I recognise as a critical SME) from the Transnational Institute (TNI), a think tank and they explanation:
provides a critical account of the emergence of CVE policies and analyses their subsequent institutionalisation within three international bodies: the European Union, the United Nations, and the Global Counterterrorism Forum.
Link:https://www.tni.org/en/publication/t...emism-policies

The summary ends with:
This report begins by examining the origins and proliferation of CVE policies and the problems that have accompanied and continue to surround their development and implementation. We then examine CVE policy and practice across the three aforementioned international bodies. The final sections contain conclusions and recommendations stemming from our research, including a framework we have developed to analyze the legitimacy of national CVE policies through their impact on fundamental rights and democratic and pluralist aspirations.

Finally, we would like to note from the outset that for all the ‘CVE mania’, it is surprising how little qualifies as the ‘evidence-led policy’ we hear so much about in other fields. Not only should we be asking for evidence that CVE policies are effective in terms of countering the terrorism, ‘radicalisation’ and extremism they purport to address, we should also be ensuring that in the absence of such evidence, policies do not risk exacerbating the divisions and grievances on which extremism feeds.