https://www.siliconvalley.com/2019/11/22/bolton-returns-to-twitter-hints-white-house-tried-to-silence-him/

Former national security adviser John Bolton said Friday the White House barred him from his own Twitter account after he left the administration and suggested it acted out of concern about what he might say.

Bolton, a constant if unseen presence during the House impeachment inquiry into Trump, reappeared on Twitter Friday after a months-long public hiatus since his departure from the White House in September.