msnbc's chief international security and diplomacy analyst. richard, you've learned these new details on momentum of russia's military buildups. give us the details. >> reporter: so i received a lengthy briefing from a senior western intelligence official, and we discussed a range of options, what intelligence officials are looking at, what they are seeing and how they are analyzing this information, and i would love to hear the admiral's take on it since he was actually in this position commanding nato and having to deal with this very similar kind of scenario in years past, but what this intelligence official told me, who has access to realtime information, is that russia is still increasing its forces, that it will have enough force in place in the next two to three weeks to carry out a full-scale invasion of ukraine should vladimir putin decide,