President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE in an early morning series of tweets on Wednesday hit back at reports of chaos in his administration, writing that his White House remains "calm" and its moves "calculated" after several resignations and reports of further staff tensions.

Trump pointed to the recent appointments of national security adviser John Bolton and economic adviser Larry Kudlow as proof that reports of his inability to fill top positions are "fake news."

"So much Fake News about what is going on in the White House. Very calm and calculated with a big focus on open and fair trade with China, the coming North Korea meeting and, of course, the vicious gas attack in Syria. Feels great to have Bolton & Larry K on board," Trump wrote.

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"I (we) are doing things that nobody thought possible, despite the never ending and corrupt Russia Investigation, which takes tremendous time and focus. No Collusion or Obstruction (other than I fight back), so now they do the Unthinkable, and RAID a lawyers office for information! BAD!" he added.

So much Fake News about what is going on in the White House. Very calm and calculated with a big focus on open and fair trade with China, the coming North Korea meeting and, of course, the vicious gas attack in Syria. Feels great to have Bolton & Larry K on board. I (we) are — Donald J. Trump (@realDonaldTrump) April 11, 2018

....doing things that nobody thought possible, despite the never ending and corrupt Russia Investigation, which takes tremendous time and focus. No Collusion or Obstruction (other than I fight back), so now they do the Unthinkable, and RAID a lawyers office for information! BAD! — Donald J. Trump (@realDonaldTrump) April 11, 2018

Bolton and Kudlow's appointments come at a time of upheaval for the Trump administration, which has seen a number of top staff leave the White House in recent weeks.

Longtime Trump aide Hope Hicks Hope Charlotte HicksSenate intel leaders said Trump associates may have presented misleading testimony during Russia probe: report Cuomo turned down Trump invitation to participate in April press briefing: report Trump shakes up White House communications team MORE, who served as White House communications director, departed last month.

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It was also reported that Trump's own chief of staff, John Kelly John Francis KellyMORE, blew up and threatened to resign as well in late March.

Other officials including the White House infrastructure adviser and national security council spokesman have also exited in recent days.

Earlier this year, the Trump administration was the source of controversy when two aides left after domestic violence allegations surfaced.