Tom Kean, former chairman of the 9/11 Commission said the alleged Iran terror plot "surprises me." Speaking to CNN's Erin Burnett, Kean said the plot is "pretty close to an act of war. You don’t go in somebody’s capital to blow somebody up.”

In an interview with CNN's Erin Burnett, the Iranian Ambassador to the U.N., Mohammad Khazaee, flatly denied his country had any involvement in the terror plot unveiled Tuesday. Khazaee described the accusations as lies created by "war monger" politicians.

In an interview with CNN's Erin Burnett, Rep. Peter King said Iran had crossed a line with its reported involvement in a terror plot on U.S. soil, saying if the plot had been carried out, it would be nothing short of "an act of war."

King, in an interview on Erin Burnett OutFront, said simple sanctions were not enough of a response, urging a strong reaction from the U.S. government.

Marc Klaas, who became an activist after the abduction and murder of his daughter Polly, told CNN's Erin Burnett that the parents in the "Baby Lisa" case must talk to police. "You have to cooperate," he said in the interview on Erin Burnett OutFront.