everay. if they get a tip that a crime is being committed, they try to talk to people who are connected to it say george papadopoulos and see what they can learn youing you i using an informant. where is the smoking gun here? >> well, it's a really good question, alisyn. the use of informants in cases -- remember, back in the fall of 2016 i think this was primarily a counterintelligence investigation at the time. it was an investigation to determine to what extent the russian government or russian surrogates were trying to influence the u.s. election. the use of an informant is a standard investigative technique. it's not particularly unusual. it doesn't require court approval. it doesn't have those high legal standards that some other types of intrusive, investigative techniques like electronic surveillance might include. and so it's pretty standard. what is unusual is revealing the