The lawyers of former National Security Advisor John Bolton consult with MPs about possible co-operation with the impeachment investigation, Paula Reid tells CBS News. Bolton was one of the officials on the July 25 phone conversation between Mr. Trump and Ukrainian President Vladimir Zelensky, and witnesses testify that Bolton was so concerned about efforts to pressure Ukraine to investigate President Trump's rivals that he called him " drug deal ". "
last month. Mr Trump tweeted at the time that he had asked for Bolton's resignation because Mr Trump" disagreed with many of his proposals, "although Bolton
Former National Security Council Director for European Affairs Fiona Hill testified in a closed-door meeting on October 16, according to The New York Times, Hill said Bolton was very concerned about the work that Rudy Giuliani, Gordon Sundland and White House Chief of Staff m Mick Mulvey The Times reported that Hill said Bolton had told lawmakers that "I am not part of any drug deal that Sundland and Mulvey are preparing."
Although not clear about exactly what Bolton was referring to, CBS News reported in September that at least one week before Mr Trump's call with Zelensky, Mr Trump instructed Mulvaney to refuse to release millions of military aid to Ukraine.
Three other Trump administration officials were called in Friday to investigate Democrats for impeachment. Russell White, Acting Director of the Office of Management and Budget (OMB); Michael Duffy, OMB's associate director of national security programs, and T. Ulrich Breckbull, State Department adviser, were ordered to testify on November 5 and 6. OMB, the agency where Vought and Duffey works, is involved in the delayed release of aid to Ukraine.
Also this week, Tim Morrison, senior national security adviser on Russia and Europe, became the first White House official to agree to testify if called upon.
Earlier this week, William Taylor, a top US diplomat in Ukraine, appeared for nine and a half hours in a closed-door deposition, which Democrats said was "very disastrous for Donald Trump."
Paula Reid and Kathryn Watson contributed to this report.