the u.s. and nato officials saying tonight that russia is poised to, quote, bombard cities into submission, that source telling cnn there could be significant civilian casualties, so joining me now is colonel john spencer, member of the california state guard and an urban warfare expert, so glad to have you back on, colonel, thank you so much. we've seen how bad this is getting, entire apartment buildings destroyed, firefights around nuclear plants, convoys with trucks capable of deploying thermobaric weapons have been spotted and now this warning from the u.s. and nato, i hate to ask you this, but how much worse can this get? >> unfortunately, i think it will and can and will get much, much worse. we've only unfortunately seen the beginning of this.