in ukraine. a senior western intelligence official telling cnn that u.s. and nato officials believe that russia is poised to, quote, bombard cities into submission. already ukrainian civilians have come under increased attacks. you're looking there at the aftermath of fighting on the outskirts of kyiv. the u.s. says about 92% of the forces russia staged outside ukraine's borders for its invasion are now inside ukraine. and we're learning russia also plans to deploy an additional 1,000 mercenaries. meanwhile, we're getting an inside look at that ukrainian nuclear power plant now occupied by russian forces. ukrainian authorities releasing video of a warning sounding inside the control room. have a listen. >> you're endangering the security of the entire world. attention. stop shooting at the nuclear hazardous facility. stop shooting at a nuclear