Poland and NATO say there's no evidence Russia sent rockets into Poland. NATO says an explosion in Poland near the Ukrainian border was likely caused by a Ukrainian rocket fired to ward off a Russian cruise-missile. Bloomberg's Annmarie Hordern and Maria Tadeo report on "Bloomberg the Open." Follow Bloomberg for business news & analysis, up-to-the-minute market data, features, profiles and more: http://www.bloomberg.com/ Connect with us on... Twitter: https://twitter.com/business Facebook: https://www.facebook.com/bloombergbusiness/ Instagram: https://www.instagram.com/quicktake/?hl=en