Russian troops and military convoys are entering Ukraine said a senior NATO commander on Wednesday, signalling the collapse of a ceasefire between Ukraine and pro-Russian rebels.
"Russian tanks, Russian artillery, Russian air defence systems and Russian combat troops" have been seen, said US General Philip Breedlove, from a NATO air base near Naples.
The Reuters news agency quoted Breedlove as saying he was "concerned about the increased movement" of Russian military convoys "in the past several days".
Earlier this week, the Organization for Security and Cooperation in Europe (OSCE) warned of the "rising" risk of renewed open conflict.
"The level of violence in eastern Ukraine and the risk of further escalation remain high and are rising," an OSCE official, Michael Bociurkiw said at a press briefing in Kiev.
"More than two months after the signing of the Minsk protocol memorandum, the firing has not ceased."
Reports of Russian troops entering Ukraine have been condemned by EU leaders, including the British Prime Minister David Cameron and the German Chancellor Angela Merkel.
There was no possibility of new sanctions targetting the Putin administration Merkel said however, speaking to reporters on Tuesday.
"Russian tanks, Russian artillery, Russian air defence systems and Russian combat troops" have been seen, said US General Philip Breedlove, from a NATO air base near Naples.
The Reuters news agency quoted Breedlove as saying he was "concerned about the increased movement" of Russian military convoys "in the past several days".
Earlier this week, the Organization for Security and Cooperation in Europe (OSCE) warned of the "rising" risk of renewed open conflict.
"The level of violence in eastern Ukraine and the risk of further escalation remain high and are rising," an OSCE official, Michael Bociurkiw said at a press briefing in Kiev.
"More than two months after the signing of the Minsk protocol memorandum, the firing has not ceased."
Reports of Russian troops entering Ukraine have been condemned by EU leaders, including the British Prime Minister David Cameron and the German Chancellor Angela Merkel.
There was no possibility of new sanctions targetting the Putin administration Merkel said however, speaking to reporters on Tuesday.