Bolton won't testify without subpoena
Former US national security adviser John Bolton is refusing to attend a voluntary interview in the impeachment inquiry against President Donald Trump.
The House committees leading the impeachment investigation asked Mr Bolton to appear behind closed doors next week. But his lawyer, Charles Cooper, says Mr Bolton will not appear without a subpoena.
Lawmakers want to hear from Mr Bolton after other witnesses told them of his concerns about Mr Trump's dealings in Ukraine and the back-channel activities of Rudy Giuliani, Mr Trump's personal lawyer.
Meanwhile, the top Russia and Europe adviser on the US National Security Council was expected yesterday to confirm evidence from a senior diplomat of how Donald Trump tried to pressure Ukraine to investigate Joe Biden.
A source said Tim Morrison was preparing to corroborate the testimony of Ambassador William Taylor jnr when he appeared in private before House impeachment investigators yesterday.
He was ready to support Mr Taylor's account that he (Mr Morrison) alerted him to the president's push to withhold security aid and a meeting with the Ukrainian president until Ukraine announced an investigation of Mr Biden, his son Hunter, and allegations of 2016 election interference.