John Bolton

"It was a really difficult situation."

Bolton defended his decision not to testify.

"I'm not going to vote for him in November — certainly not going to vote for Joe Biden either."

"If the president wins, the political constraint is gone."

"It does not reflect accurate facts and substantially distorts facts."

"I was in the room."

"Under oath, he would have had an opportunity to answer questions and not just make assertions."

"Bolton who has — as we now know — that he could have offered and refused to offer — is certainly no one to talk."

"The government has not established that an injunction is an appropriate remedy."

"It is both sad and dangerous that John Bolton's final public role is that of a traitor."

Trump is sharing the "only thing" he liked about Bolton.

Schiff released a statement announcing that he will be consulting with Pelosi in the coming days.

"He was so arrogant in terms of House when we were engaged in the impeachment."

"Bolton may be an author, but he’s no patriot."

"I think he was so focused on re-election that longer-term consideration fell by the wayside."

"I have no recollection of that ever happening."

"Trump then, stunningly, turned the conversation to the coming U.S. presidential election."

"The fact is, he never came to me and gave me those concerns."

The civil lawsuit came one day after U.S. President Donald Trump said Bolton would be breaking the law if the book were published.

"Maybe he's not telling the truth."