happens. there are helicopters which could be a sign pointing toward invasion. if it s going to happen, it would happen in the next couple of months before the march muddy troops. we opened this segment saying russians are not going to invade. how credible is that? reporter: i think we can sympathize with the u.s. delegation now. sympathetic to hear. is it an escalatory game where you need to keep one-upping your brinksmanship or are they sincere about this? the helicopters moving in kind of bolster the idea they re planning for an invasion. they re trying to maintain maximum leverage and maximum options. they might take an off-ramp, but until they do that, they seem to want us to think they re going to invade.