Former CBS anchor Dan Rather on Tuesday blasted the Trump administration’s integrity following national security adviser Michael Flynn’s resignation.

“The White House has no credibility on this issue,” he wrote on his Facebook page. "Their spigot of lies — can we finally all agree to call them lies — long ago lost them any semblance of credibility.”

“We need an independent investigation,” Rather added. "Damn the lies, full throttle forward on the truth.

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"[This] is real and it is serious. Deadly serious. We deserve answers and those who are complicit in this scandal need to feel the full force of justice.”

Flynn resigned late Monday amid scrutiny of his phone conversations with Russian Ambassador Sergey Kislyak in December after reports that he had misled senior White House officials about discussing U.S. sanctions on Russia before Trump took office.

The retired Army lieutenant general blamed the “fast pace of events” for “inadvertently” giving Vice President Pence and others “incomplete information” about the talks.

Pence had previously insisted Flynn did not discuss sanctions against Russia with Kislyak, but mounting evidence seemingly contradicted that version of events.

Reports emerged last week that Flynn and Kislyak spoke about that topic before Trump’s Jan. 20 inauguration.

White House press secretary Sean Spicer on Tuesday said Trump ultimately requested Flynn’s resignation once the president’s trust in his former adviser “eroded” following the allegations.

Rather argued Tuesday that the Flynn incident could ultimately eclipse the Watergate controversy.

“Watergate is the biggest political scandal of my lifetime, until maybe now,” he said. "It was the closest we came to a debilitating Constitutional crisis, until maybe now.”

“And we may look back and see, in the end, that it is at least as big as Watergate,” Rather added of Flynn's resignation. "It may become the measure by which all future scandals are judged.

“It has all the necessary ingredients, and that is chilling. This Russia story started out with an avalanche and where we go from here no one really knows.”