Trump fires back at 'loudmouth' Brennan says he 'cannot be trusted' with country's secrets

President Trump has fired back at former CIA director John Brennan who has been speaking out against the president for revoking his security clearance. 

Trump tweeted Saturday: “Has anyone looked at the mistakes that John Brennan made while serving as CIA Director? He will go down as easily the WORST in history & since getting out, he has become nothing less than a loudmouth, partisan, political hack who cannot be trusted with the secrets to our country!” 

The president’s social media attack happened the morning after Brennan said of Trump on MSNBC, “The fact that he’s using a security clearance of a former CIA director as a pawn in his public relations strategy I think is just so reflective of somebody who, quite frankly, I don’t want to use this term maybe, but he’s drunk on power. He really is, and I think he’s abusing the powers of that office.” 

RELATED: Former CIA Director John Brennan through the years

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Former CIA Director John Brennan through the years
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Former CIA Director John Brennan through the years
CIA Director John Brennan speaks at a forum about "CIA's strategy in the face of emerging challenges" at The Brookings Institution in Washington, U.S. July 13, 2016. REUTERS/Carlos Barria
WASHINGTON, DC - JANUARY 07: U.S. President Barack Obama (L) speaks as Acting CIA Director Michael Morell (R) and Deputy National Security Advisor for Homeland Security and Counterterrorism John Brennan (2nd L) listen while making personnel announcements during an event in the East Room at the White House, on January 7, 2013 in Washington, DC. President Obama has nominated Hagel for the next Secretary of Defense and Brennan to become the new director of the CIA. (Photo by Alex Wong/Getty Images)
James Clapper (R), Director of National Intelligence, testifies alongside CIA Director John Brennan (L), during a US House Committee on Intelligence hearing on Capitol Hill in Washington, DC, September 10, 2015. The committee held the hearing to examine worldwide cyber threats. AFP PHOTO / SAUL LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)
WASHINGTON, DC - JANUARY 31: Assistant to the President for Homeland Security and Counterterrorism John Brennan (L), U.S. President Barack Obama's nominee to be CIA director, meets with U.S. Senate Select Committee on Intelligence Chairman Dianne Feinstein (D-CA) at Feinstein's office at Hart Senate Office Building January 31, 2013 on Capitol Hill in Washington, DC. Brennan met with Feinstein who will hold a hearing to start the confirmation process of Brennan's nomination. (Photo by Alex Wong/Getty Images)
Anti-war protesters shout slogans as John Brennan (R), President Barack Obama's pick to lead the CIA, arrives to testify before a full committee hearing on his nomination to be director of the Central Intelligence Agency (CIA) in the Hart Senate Office Building in Washington, DC, on February 7, 2013. AFP PHOTO/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
John Brennan, US President Barack Obama's pick to lead the CIA, testifies before a full committee hearing on his nomination to be director of the Central Intelligence Agency (CIA) in the Hart Senate Office Building in Washington, DC, on February 7, 2013. AFP PHOTO/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)
UNITED STATES - MARCH 12: CIA Director John Brennan testifies during the Senate (Select) Intelligence Committee hearing on 'Current and Projected National Security Threats to the United States' on Tuesday, March 2013. (Photo By Bill Clark/CQ Roll Call)
NEW YORK, NY - AUGUST 08: General Keith B. Alexander, Director of the National Security Agency (NSA) and Commander of U.S. Cyber Command (L); John O. Brennan, Director of the Central Intelligence Agency (CIA) (C); and Robert S. Mueller III, Director of the Federal Bureau of Investigation (FBI) (R), take part in a question-and-answer forum during the International Conference on Cyber Security (ICCS) on August 8, 2013 in New York City. The ICCS, which is co-hosted by Fordham University and the FBI, is held every 18 months; more than 25 countries are represented at this year's conference. (Photo by Andrew Burton/Getty Images)
WASHINGTON, DC - MARCH 11: Central Intelligence Agency Director John Brennan delivers remarks at the Council on Foreign Relations March 11, 2014 in Washington, DC. Brennan denied accusations by U.S. senators who claim the CIA conducted unauthorized searches of computers used by Senate Select Committee on Intelligence staff members in an effort to learn how the committee gained access to the agencyÃs own 2009 internal review of its detention and interrogation program, undermining Congressà oversight of the spy agency. (Photo by Chip Somodevilla/Getty Images)
Director of Central Intelligence Agency John Brennan speaks during a press conference at CIA headquarters in Langley, Virginia, December 11, 2014. The head of the Central Intelligence Agency acknowledged Thursday some agency interrogators used 'abhorrent' unauthorized techniques in questioning terrorism suspects after the 9/11 attacks. CIA director John Brennan said there was no way to determine whether the methods used produced useful intelligence, but he strongly denied the CIA misled the public. AFP PHOTO/JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
WASHINGTON, USA - SEPTEMBER 10: CIA Director John Brennan testifies during a House Select Committee on Intelligence hearing on Cyber Security and the threat of Cyber Attacks in Washington, USA on September 10, 2015. (Photo by Samuel Corum/Anadolu Agency/Getty Images)
Former CIA director John Brennan testifies before the House Intelligence Committee to take questions on ?Russian active measures during the 2016 election campaign? in the U.S. Capitol in Washington, U.S., May 23, 2017. REUTERS/Kevin Lamarque
Former CIA director John Brennan testifies before the House Intelligence Committee to take questions on ?Russian active measures during the 2016 election campaign? in the U.S. Capitol in Washington, U.S., May 23, 2017. REUTERS/Kevin Lamarque
Former CIA director John Brennan is sworn in to testify before the House Intelligence Committee to take questions on ?Russian active measures during the 2016 election campaign? in the U.S. Capitol in Washington, U.S., May 23, 2017. REUTERS/Kevin Lamarque
Central Intelligence Agency (CIA) Director John Brennan participates in a session at the third annual Intelligence and National Security Summit in Washington, DC, U.S. on September 8, 2016. To match Special Report USA-CIA-BRENNAN/ REUTERS/Gary Cameron/File Photo
CIA Director John Brennan arrives at the Senate Intelligence Committee hearing on "diverse mission requirements in support of our National Security", in Washington, U.S., June 16, 2016. REUTERS/Yuri Gripas
CIA Director John Brennan testifies before the Senate Intelligence Committee hearing on "diverse mission requirements in support of our National Security", in Washington, U.S., June 16, 2016. REUTERS/Yuri Gripas
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Brennan was reportedly referring to speculation that Trump decided to invoke the move against him in order to deflect the news cycle away from a newly released book by former aide Omarosa Manigault Newman which contains explosive claims about the administration. 

The White House made the announcement in a briefing Wednesday, with press secretary Sarah Huckabee Sanders saying in a statement, in part, “Mr. Brennan has a history that calls into question his objectivity and credibility.”

During the session, she also denied that the former CIA director and others were being targeted over their frequent criticisms of the president. 

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