that everyone is facing. what's the face-saving way out of this? >> david, you have written extensively about the potential for some kind of renewed agreement between the united states or even the west and russia, and you've written about the difficulties of that specifically when it comes to cyber weapons, because, as you wrote, the united states has a vulnerability when it comes to russian access to things like critical infrastructure. you write that including some of those cyber weapons in an agreement is difficult because, quote, such weapons do not lend themselves to arms control. they are hard to find and impossible to count. but no agreement with russia that excludes them will address the constant asymmetric battling that goes on between the two countries every day. so ultimately are you arguing that there is a mutually-assured destruction between the united states and russia when it comes