Reiterating accusations leveled by Ukrainian officials against Moscow, he said: "Over the last week, close to the Ukrainian border, there has been a regrouping and build-up of forces of the Russian Federation."

Parubiy put the numbers close to the border at 41,000 and said they were equipped with 150 tanks, 400 armored vehicles and 500 other weapon systems.

He said some of the new Ukrainian recruits would join or support combat units and some of the others would support units to help defend the border.

Separately, the parliament also sought to raise to 60 the maximum age of Ukrainians who may be called up from military reserves in the future from the current ceiling of 50. The change needs to be approved by the president and it was not immediately clear if it would apply to the Tuesday call-up.

Russia withdrew most of the 40,000 troops it had close to the border earlier this year, reducing them to fewer than 1,000 by mid-June. But since then, it has been building up its forces again, a NATO military officer said this month.

Parubiy accused Russia of continuing to supply the rebels, who say they are fighting to win independence from Kiev for the Donbas coal mining region.

"Such actions are classified as aggression against our state," he said. (rt/ez)