- Bolton willing to testify in Senate impeachment trial if subpoenaed https://thehill.com/homenews/administration/476938-bolton-says-he-would-testify-in-senate-impeachment-trial-if 6 comments politics
- John Bolton Willing to Testify in Senate Impeachment Trial if Subpoenaed https://www.thedailybeast.com/john-bolton-willing-to-testify-in-senate-impeachment-trial-if-subpoenaed 6 comments politics