do these limited sanctions really have enough teeth to do anything much at all to deter putin? they re not the kind of sanctions that are designed for deterrence. they re a response to an action taken by putin. obviously, this was something the biden administration was prepared to do. they understood all along that this was probably going to be part of putin s play book. that s why they re able to rule it out right away within hours of putin making this announcement. you know, the question is really what kind of escalation putin still has in mind for this play that he s invited us all to observe. so that part is still unfolding. there are still 190,000 military force strong surrounding ukraine on three sides at this point. so i think we should see this as a stage in a still unfolding drama. general, cnn s dana bash