Watch former Obama advider Jon Finer's candid, full interview on Putin and allegations of Russian interference in the 2016 U.S. election – all part of "The Putin Files", FRONTLINE's media transparency project. Explore Finer's full interview and interactive transcript here: https://www.pbs.org/wgbh/frontline/in...

Explore the entire "Putin File" experience here: http://www.pbs.org/wgbh/frontline/int...