reporter: well, we did hear from president biden before he departed bali several years ago on air force 1 back to the united states but he s been in touch with the nato secretary general as well as with the polish president to say nothing of the meeting. the emergency meeting he had here with allied leaders, the u.k., canada, japan, france, among them. so the latest best information is now coming as you noted from president duda of poland saying it appears most likely this was an unfortunate accident in his words and not an intentional attack. he says it is most likely this was caused by ukrainian air defense systems there but he did not lay any blame on the side of ukrainians, that they were simply trying to defend themselves. we did hear from the president alongside those g 7 and nato leaders who were meeting together today among them, their comment being they will fully