This is true. Obama was supposedly keeping Flynn close, up until Obama fired Flynn from his post as head of the DIA in 2014. If you recall, this was right around/after the Ukrainian Coup that the Obama administration perpetrated.
Obama was well aware that Flynn knew about the BILLION$ Brennan and others were running off the books. Even worse, Flynn also knew about all the shenanigans with respect to Ukraine, where the Obama admin privately funded a Ukrainian coup. This was funded via massive money laundering schemes thru Franklin Templeton and BlackRock funds. THIS UKRAINE EXPOSURE is the tip of the spear referred to by someone above that Obama and Biden stand to lose the most on, especially given the unbelievable level of criminality involved and the HUNDREDS of ukrainians that were killed!