if they'd really believed that national security was at risk or there was some collusion -- >> i'll double check this, professor, but i don't believe that we reported that that was the basis for -- for this, but i'll double check it. >> actually, you do. i looked at it today. i believe it's april 17th of 2017. >> i'll look it up and i appreciate that. john dean, just quickly before we go, i mean, do you believe this investigation is in its conclusion phase, as the president's attorneys seem to be indicating? >> no, i don't. i don't. i think it's very early in the investigation still. we know the prosecutor is going to be around for at least one very serious trial. so he's going nowhere. and that will probably be at least a year off before that ends. >> john dean, appreciate it. jeff toobin, professor elizabeth foley. thank you very much. good discussion. coming up, the president also tweeted about the iran protests which have left more than 20 people dead, hundreds arrested. what the president tweeted and what the white house had to say this afternoon, next.