looking for specifically now to see if president biden is actually successful in warning putin off? what would be the first sign? the first sign has to be a demobilization of significant numbers of troops, russian troops on the border, several borders of ukraine. as we know, the russians have moved forces up close to the border in crimea that they illegally occupy on ukraine s western border and on the northeast, to the northeast towards belarus. so the first sign, and indeed a precondition really, for any kind of useful, constructive conversation, negotiation on european security has to be a demobilization, a deescalation president putin has to pull back his troops. as we recall, he did that as a response to president biden s phone call in april, when