Ex-aide Bolton says 2020 election is 'last guardrail' to protect US from Trump

The 2020 presidential election this November is the "last guardrail" to protect the US from the continuation of Donald Trump's administration, John Bolton, the president's former national security advisor, has said.

In a tell-all interview with ABC News that aired on Sunday to promote his new book, The Room Where It Happened, Mr Bolton explained why he did not want to participate in the House's impeachment inquiry into Mr Trump last year even though he believed the president's behaviour to be unbecoming.

"He was acquitted in the Senate. He didn't learn lessons from [being impeached], other than that he could get away with it, which leaves only the last guardrail... the election this November," Mr Bolton said. "I think the House Democrats built a cliff, they threw themselves off of it. And halfway down, they looked up and saw me, and said, 'Hey, why don't you come along?'"

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