President-elect Trump slammed outgoing Central Intelligence Agency Director John Brennan, saying he did a poor job as the leader of the agency and suggesting he may have leaked the unverified dossier linking Trump to Russian intelligence.

Trump quoted a headline from Fox News' interview with Brennan earlier on Sunday when Brennan ripped Trump for "talking and tweeting" and questioning intelligence reports. Brennan said Trump is underestimating the Russians.

Trump said he couldn't do a worse job than Brennan regarding the Russians.

much worse - just look at Syria (red line), Crimea, Ukraine and the build-up of Russian nukes. Not good! Was this the leaker of Fake News? — Donald J. Trump (@realDonaldTrump) January 16, 2017

.@FoxNews "Outgoing CIA Chief, John Brennan, blasts Pres-Elect Trump on Russia threat. Does not fully understand." Oh really, couldn't do... — Donald J. Trump (@realDonaldTrump) January 16, 2017



"Oh really, couldn't do much worse - just look at Syria (red line), Crimea, Ukraine and the build-up of Russian nukes. Not good! Was this the leaker of Fake News?" Trump tweeted.

Trump and the intelligence agencies have been at odds since he began ripping Federal Bureau of Investigation Director James Comey for closing the case against Hillary Clinton during the campaign.

Since then, Trump has sided with Russia over the intelligence agency's reports that Russia was responsible for hacking into the Democratic National Committee. Trump eventually accepted the intelligence community's assessment last week.

However, Trump last week also accused the intelligence community of behaving like "Nazi Germany" by possibly leaking the report from Buzzfeed that contained salacious details on Trump's time in Russia. The report also alleged Trump staffers worked directly with Russian intelligence to defeat Clinton in the election.

Director of National Intelligence James Clapper denied that the report was leaked from the intelligence community, but Trump continues to blame them for the information becoming public.