is nbc news's erin mclaughlin in kyiv, matt bodner in moscow, as far as rick stengel former undersecretary of state for public diplomacy, and retired admiral james stavridis, a an international security and diplomacy analyst. matt, the arrival of those russian surface-to-air missiles in belarus comes just before a joint military exercise. questions have been raised if this is part of a military exercise or part of a continuing buildup of russian troops there at the border. >> reporter: thank you, jose. the kremlin deflects when you try to pin them down on the size and numbers of this. the kremlin spokesman asked, how big is this. he said, it's a significant movement. and that's very trues.