'Black swans and black elephants' and Winston Churchill appear in this free 58 pg. paper on leadership and the summary opens with:
Executive leadership at the highest levels of corporate, public service and political life faces new vulnerabilities that few in these positions are willing to talk about publicly. In 2016, they are greater than at any time in recent history, and the implications are deeply troubling.

(Shortly after) so in sixty confidential in-depth 1-1 interviews undertaken for this study, and in many other conversations at the highest level, plus conference sessions both public and behind closed doors. Together, they reveal the ongoing leadership struggle to learn and build on lessons from the continuing fall-out for leaders after the 2008 Global Financial Crisis, plus the ever-accelerating pace of digital transformation, and the unexpected reasons for escalating geo-political instability in the Middle East five years after the Arab Spring.
Later:
nine key words and phrases kept being repeated during the confidential interviews:
1. BEING OVERWHELMED BY MULTIPLE, INTENSE PRESSURES
2. INSTITUTIONAL CONFORMITY
3. WILFUL BLINDNESS
4. GROUPTHINK
5. RISK AVERSION
6. FEAR OF CAREER LIMITING MOVES (CLMs)
7. REACTIONARY MIND-SETS
8. DENIAL
9. COGNITIVE OVERLOAD AND DISSONANCE


Link to the project:http://www.thinkunthinkable.org/

Note the paper appeared before President-Elect Trump's election.

Thanks to a "lurker" who had found the report via Kings War Studies and used the concepts in an AAR process.