From a recent article by The Economist (Print Edition of 7th August 2021, subscription required)
https://www.economist.com/leaders/20...e-intelligence
and free podcast (below)
AMATEURS, ACTIVISTS and academics are using technology and open-source data to uncover state secrets. Shashank Joshi, The Economist’s defence editor, explores how open-source intelligence is disrupting statecraft and asks John Brennan, a former director of the CIA, how these techniques are being used alongside secret intelligence to detect missile silos in China.
https://www.economist.com/podcasts/2...ing-statecraft
JAS