Russian artillery fire is down as much as 75% from the wartime high, according to US and Ukrainian officials. It may be a sign of how the prolonged and brutal battle has had a significant effect on Russia's stockpile and they may be regrouping to try to pinpoint where Ukraine is going to launch its next major offensive. CNN's Oren Liebermann and Jim Sciutto discuss what's happening on both sides of the conflict. #CNN #News
