Why they all cleaning house?
5 Eyes
The Five Eyes is an anglophone intelligence alliance comprising Australia, Canada, New Zealand, the United Kingdom and the United States. These countries are parties to the multilateral UKUSA Agreement, a treaty for joint cooperation in signals intelligence
https://en.wikipedia.org/wiki/Five_Eyes
USA
National intelligence chief Clapper resigns
https://www.politico.com/story/2016/11/national-intelligence-chief-clapper-resigns-231547
UK
GCHQ chief Robert Hannigan quits
https://www.theguardian.com/uk-news/2017/jan/23/gchq-chief-robert-hannigan-quits
New Zealand
Inspector-General of Intelligence and Security resigns
https://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=12252865
Canada
Canada: arrest of ex-head of intelligence shocks experts and alarms allies
https://www.theguardian.com/world/2019/sep/16/concern-mounts-after-canadas-ex-head-of-intelligence-accused-of-leaking
Australia
Australian cyber security chief announces resignation ahead of poll
https://www.defenceconnect.com.au/intel-cyber/3993-australian-cyber-security-chief-resigns
h/t Shamrock007