Prosecutors had previously recommended no jail time for Flynn's cooperation.

Prosecutors noted in a Tuesday filing that while Flynn "has sought to assist and aid the government," there were periods "where the defendant has sought to thwart the efforts of the government to hold other individuals, principally Bijan Rafiekian, accountable for criminal wrongdoing."

Flynn is accused of failing to accept responsibility and "complete his cooperation" - as well as "affirmative efforts to undermine" the prosecution of Rafiekian."

The 67-year-old Rafiekian, an Iranian-American and Flynn's former business partner, was charged with illegally acting as an unregistered agent of a foreign government.