National Security Adviser Michael Flynn at the White House on February 10, 2017 in Washington, DC.

Special counsel Robert Mueller on Tuesday night filed a memo recommending a light sentence for President Donald Trump's former national security advisor Michael Flynn, including the possibility of no jail time.

The memo almost completely blacks out the details what Flynn told the special counsel's office.

Flynn is due to be sentenced Dec. 18 in U.S. District Court in Washington for a crime of lying to federal agents about his conversations with a top Russian diplomat during the presidential transition from late 2016 into early 2017.

Read Robert Mueller's sentencing recommendation for Michael Flynn below: