Originally Posted by Helemoto
Am I missing something. Is talking to a Russian ambassador illegal???

The purpose of ambassadors is to confer with members of foreign governments, so no, talking with an ambassador is not illegal unless the conversation involves illegal acts, such as unauthorized transfer of classified information.
Originally Posted by Helemoto
Also its not perjury if he isn't under oath. I don't think anyone was under oath.

Sessions was under oath, but in the context of the question asked (were surrogates of the Trump campaign in communication with the Russians), the truthful answer Session gave was no. He knew of no such activity, and himself, as a member of the campaign, had no such contact. His contact was in conjunction with his duties as a Senator.

To the everlasting glory of the infantry...

Owain ab Arawn
KGB Supreme Knight
King's High Council