I'm curious... supposed Russian gangsters fighting over a drug deal gone bad, yet no one has a gun or knife?

Somebody better pick up their game!

Other than plenty of opportunities for running, I think picking up a pipe or stick and smacking the crap out of anyone within range would be a good option, in conjunction with zoning. Or if you can get to your vehicle... I'm sure someone would accidently get under a tire or two.
Or a simple solution, don't hang out with bad people...

Cheers!
Patrick