the russian military laid down this ultimatum in the morning demanding ukrainians abandon their weapons if they want to live. russian defense ministry claiming it shot down a military transport plane neuro december sa, still no confirmation. despite that claim, the u.s. says the first shipments of heavy weapons is in country, including howitzer cannons and artillery rounds. the u.s. military working the phones along with the pentagon to try and get along lies to speed up shipments of weapons and ammunition to ukraine. more details from cnn s arlette saenz reporting in from the white house. reporter: the first round of that more sophisticated and heavy-duty military assistance from the united states to ukraine has started to arrive in the region. that s according to a white house official. the plans were to send that