Attempted Mugging?

Here's another great example of picking a fight with the wrong guy:
Commentary on the YouTube page suggests the two muggers are drunken Russians, but I can't identify the speech patterns. The slap to the girl was no accident, the guy that hit her could see them over his left shoulder. I have a feeling these guys might know each other, or have seen each other around the neighborhood. The Boxer does not hesitate for one second, taking the fight to the bad guys. He hits without warning, controls the distance and maintains a good fighting position the whole time. Too bad they move out of view, we might have seen how this was resolved...