Former CIA Director John Brennan John Owen BrennanJournalism or partisanship? The media's mistakes of 2016 continue in 2020 Comey on Clinton tweet: 'I regret only being involved in the 2016 election' Ex-CIA Director Brennan questioned for 8 hours in Durham review of Russia probe MORE torched President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE over a tweet where he praised his supporters.

Brennan hit back at Trump for focusing on his own supporters, not “all Americans,” as the country faces numerous challenges.

ADVERTISEMENT

“All Americans—not just your supporters—deserve a President who is honest, ethical, selfless, & substantive,” Brennan wrote in a tweet. “Our country faces daunting domestic & international challenges.”

“If there is a scintilla of decency left in you, you would focus on your responsibilities, not on yourself,” he added.

All Americans—not just your supporters—deserve a President who is honest, ethical, selfless, & substantive. Our country faces daunting domestic & international challenges. If there is a scintilla of decency left in you, you would focus on your responsibilities, not on yourself. https://t.co/dVE2GlDRr7 — John O. Brennan (@JohnBrennan) June 16, 2018

Trump tweeted earlier Saturday that his voters were the “smartest” and “most loyal” in the history of all U.S. presidents.

"My supporters are the smartest, strongest, most hard working and most loyal that we have seen in our countries history,” Trump tweeted. “It is a beautiful thing to watch as we win elections and gather support from all over the country. As we get stronger, so does our country. Best numbers ever!"

My supporters are the smartest, strongest, most hard working and most loyal that we have seen in our countries history. It is a beautiful thing to watch as we win elections and gather support from all over the country. As we get stronger, so does our country. Best numbers ever! — Donald J. Trump (@realDonaldTrump) June 16, 2018

Brennan is one of Trump’s most frequent and harshest critics. Earlier this month, he penned a Washington Post op-ed comparing Trump to “corrupt, incompetent … demagogues.”