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Bolton opposed Trump's Ukraine call: report

Former White House national security adviser John BoltonJohn BoltonUS drops lawsuit, closes probe over Bolton book John Bolton: Biden-Putin meeting 'premature' Republicans request documents on Kerry's security clearance process MORE opposed the phone call between President TrumpDonald TrumpGuardian Angels founder Curtis Sliwa wins GOP primary in NYC mayor's race Garland dismisses broad review of politicization of DOJ under Trump Schumer vows next steps after 'ridiculous,' 'awful' GOP election bill filibuster MORE and Ukrainian President Volodymyr Zelensky at the center of an impeachment inquiry launched by House Democrats, NBC News reported Monday.

Three current and former administration officials told the network that Bolton was opposed to the call because he was concerned Trump wasn’t coordinating with advisers on what to say and might air personal grievances.

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Officials reportedly noted that Bolton did not listen in on the call.

The Hill has reached out to the White House for comment.

In the conversation on July 25, Trump pressed Zelensky to investigate former Vice President Joe BidenJoe BidenBaltimore police chief calls for more 'boots on the ground' to handle crime wave Biden to deliver remarks at Sen. John Warner's funeral Garland dismisses broad review of politicization of DOJ under Trump MORE and his son Hunter Biden.

A partial transcript of the call released by the White House last week confirmed the request from Trump.

The call gained attention following reports of a whistleblower complaint from within the intelligence community that focused on it.

Speaker Nancy PelosiNancy PelosiPelosi quashes reports on Jan. 6 select committee Overnight Defense: Joint Chiefs warn against sweeping reform to military justice system | Senate panel plans July briefing on war authorization repeal | National Guard may have 'training issues' if not reimbursed On The Money: Powell says pickup in job gains likely this fall | Schumer, Pelosi meeting with White House on infrastructure MORE (D-Calif.) formally launched an impeachment inquiry last Tuesday and committee chairs have already begun requesting related documents.

Bolton was ousted as national security adviser last month amid policy disagreement with Trump.

In his first public speech since leaving the administration, he said on Monday that he does not believe North Korean leader Kim Jong UnKim Jong UnSister of North Korean leader dismisses prospects for talks with US Sullivan: Comments by North Korea's Kim an 'interesting signal' Kim says North Korea needs to be 'prepared' for 'confrontation' with US MORE will give up his nuclear weapons in a deal with the United States, contradicting Trump's position on the issue.