After weeks of deepening tensions at the Ukraine border with Russia, intelligence sources have warned Kremlin chiefs are set to order an attack on Kyiv within hours.
American agencies have said Russian forces could strike at the Ukrainian capital at 3am local time with an air barrage, while at the same time launching amphibious warships to bombard the nation's southern coastline.
However, there are reports some of Moscow's troops have been stood down, while last-ditch diplomatic moves are still ongoing.
