Those pics look like what happens when three middle aged guys (okay one of 'em is old) get together and bullshit about some stuff
Pence just looks like he's doing Serious Dad face trying to make Putin laugh here
Bolton is laughing at whatever Pence has just said through the poker face, OR at whatever Putin's joke-in-English was
"You guys, let's freak out the reporters here, do some wacky stuff, and we'll see what they make up to go in the papers" "Good idea bro, do that Dad face thing"