The United States on Friday demanded Moscow remove an aid convoy it has sent into rebel-held eastern Ukraine without permission, accusing Russia of a flagrant violation of the sovereignty of its former Soviet neighbor and threatening more sanctions.
Moscow, which has thousands of troops close to the Russian side of the border, warned against any attempt to "disrupt" the convoy, which it said is purely humanitarian. It did not say what action it might take if the Ukrainian military intervened.
NATO's top military commander said the movement of trucks looked like a disguised attempt to reinforce separatist forces.