it's called a maska. Current issue.. looks like a cheap motorcycle helmet.
when you buy one.. pick me one up as well for finding it for you. 1400 CDN for a helmet is well.. steep.
http://www.rusmilitary.com/html/maska_helmet.htm
there is also a sphera in that picture as well. much cheaper but you will look like you are from that movie space balls wearing it.
http://www.rusmilitary.com/html/sphera_helmet.htm
enjoy. expensive kit but well worth it. One of my team mates is making a maska replica for gaming.
Those guys in your picture look somewhat disheveled but they are most likely russian special forces by the loadouts they have.
Nice picture, I don't recall ever seeing that one before.