RUSSIA still has troops in eastern Ukraine and retains a very capable force on the border despite a partial withdrawal, Nato's military commander has said.

US Air Force General Philip Breedlove said: "We've seen a pretty good withdrawal of the Russian forces from inside Ukraine but, make no mistake, there remain Russian forces inside eastern Ukraine."

Some Russian troops near the Ukraine border had left and others appeared to be preparing to leave.

"But the force that remains and shows no indications of leaving is still a very capable force," he said.

Mr Breedlove spoke before tomorrow's parliamentary election in Ukraine in which President Petro Poroshenko seeks a mandate to press ahead with his plan to end a separatist conflict and pursue integration with mainstream Europe.

Nato Secretary-General Jens Stoltenberg, making his first visit to Nato's military headquarters since he took over at the start of this month, said Russia remained in violation of international law in Ukraine.