You know that's a silly question, right? I believe it was McCain, I was watching a version that kept cameras on sessions face.
Overall, it was a piss poor performance from him. Telegraphing to idiot where he should claim executive privilege was quite obvious. His non answers to Harris and clear attempts to just run the clock out should have made him embarrassed but this is sessions.
A reliance on "policy" where you can't produce the policy is a bit of a no-no. No questions on any other diplomats met from other nations so little way to gauge if he met more or less than is usual with kislayak. Reluctant to commit to future appearances. Cotton practically sucked him off for his segment. Piss poor memory throughout. In general the opposite of comeys testimony. Evasive answers, little info, quick to recall a conversation with kislayak from the start of the Crimea debacle, couldn't remember standing 2 meters away in a group photo at a speech at the start of the year.
His "I get nervous" to Harris is telling. I'd be nervous too if I was trying my best to avoid criminal charges under oath.
Anecdotal, but when I've had to testify under oath I was in a similar situation to comey (stacks of contemporary notes, email chains, detailed timeline of actions taken, wronged party) and the other side was similar to sessions with a "we thought we could, so we did." It didn't end well for them and I predict the same for sessions, eventually.
So, bets on when idiot decides to hang himself under oath? Tuppence on week after next and never.