Is Russian Amb. Sergey Kislyak Putin's man 'behind enemy lines'?
02:17MSNBC's Brian Williams speaks with POLITICO reporter Michael Crowley who has done extensive reporting on Kislyak who shares what we know about him and who he's met with.
MSNBC's Brian Williams speaks with POLITICO reporter Michael Crowley who has done extensive reporting on Kislyak who shares what we know about him and who he's met with.