1. American Security Project (2012) North Korea’s nuclear program. American Security Project. https://www.americansecurityproject.org/ASP%20Reports/Ref%200072%20-%20North%20Korea%E2%80%99s%20Nuclear%20Program%20.pdf. Accessed 19 May 2020
2. Armstrong CK (2009) The destruction and reconstruction of North Korea, 1950–1960. Asia Pac J Jpn Focus 7:1–9
3. Bergin B (2018) Old Man Ho: The OSS role in Ho Chi Minh’s rise to political power. Unclassified Extr Stud Intell 62(2):7–22
4. Bermudez J, Parallel B (2018) Yongbyon declassified part I: Early work on first nuclear research reactor. Center for Strategic and International Studies. https://beyondparallel.csis.org/yongbyon-declassified-part-i/. Accessed 15 May 2020
5. Burr W (2015) U.S. Cold War nuclear target lists declassified for first time. National Security Archive, George Washington University. https://nsarchive2.gwu.edu/nukevault/ebb538-Cold-War-Nuclear-Target-List-Declassified-First-Ever. Accessed 24 Apr 2020