fighting and are very clearly held up the russian advance in ways that i think have really rattled the russians and arguably a lot of the cease-fire efforts are efforts for the russians to ask for a bit of a breather to reconfigure their own forces. >> ukrainian official says that russia is planning to encircle. are there preparations there for that? >> there are preparations similar to the one that nick was describing. they got to get through or around mykolaiv where nick is at the moment. they've got to push long way west if they're going to conduct that kind of an operation. they're going to need a lot of troops to do it and a lot of preparations are being made for that. there is an even more intense