Top officials of the Organization of Security and Cooperation in Ukraine say the country is at a crossroads with a significant reduction in combat operations and the withdrawal of some heavy weapons.

But Ertugrul Apakan, head of the OSCE Special Monitoring Mission to Ukraine, told the U.N. Security Council on Friday that there has still been some firing around Donetsk Airport and the southeastern port of Mariupol.

Heidi Tagliavini, the OSCE's lead figure at talks on a cease-fire and peace process, said Ukraine is at "the crossroads where we are facing the risk of a further escalation of the conflict or where common sense, responsibility and humanity shall prevail, and we may be able to walk on the road to peace."

Both spoke by videoconference from Ukraine's capital Kiev.