International observers in eastern Ukraine say that a cease-fire there has been holding for two weeks now.

More than 8,000 people have been killed in fighting between Russia-backed separatist rebels and Ukrainian government forces. Two previous attempts to establish a cease-fire in eastern Ukraine failed before the two sides agreed to stop fighting starting Sept. 1.

Alexander Hug, deputy head of the Organization for Security and Cooperation in Europe's monitoring mission in Ukraine, told a webcast news conference on Wednesday both the rebels and the government troops have "largely observed" the cease-fire.

Hug warned, however, of military movement on the government-controlled side and risks that fighting can resume "at any moment" while weapons remain close to the front-line.