TYB

https://www.gao.gov/products/gao-10-442

https://www.gao.gov/assets/gao-10-442.pdf

https://www.newshawknetwork.com/government/2-13-2018-qdrops-operation-merlin-hanoi-ruth-song-bird/

https://vn.usembassy.gov/united-states-supreme-court-associate-justice-ruth-bader-ginsburg-visits-hanoi/

<https://vietnamtimes.org.vn/us-supreme-court-associate-justice-ruth-bader-ginsburg-visits-hanoi-797.html