Washington (CNN) President Donald Trump was infuriated after it quickly leaked that he had been directly instructed by his national security advisers in briefing materials not to congratulate Russian President Vladimir Putin on his recent election victory during their call Tuesday morning, a source familiar with the President's thinking said. According to the source, the incident resurfaces his long-held belief there are individuals inside his administration -- especially in the national security realm -- who are actively working to undermine him. White House chief of staff John Kelly also is furious that a confidential presidential briefing became public knowledge, a White House official said, and intends to address the matter Wednesday as aides try to figure out who disclosed the warning. "If this story is accurate, that means someone leaked the President's briefing papers. Leaking such information is a fireable offense and likely illegal," another senior White House official told CNN Wednesday.

Source: CNN March 21, 2018 12:24 UTC