Cease-fire in Ukraine May be Slipping Away

Ukrainians carry a coffin bearing the body of Olga Abdurashitiva, who was killed Saturday during an attack in Mariupol, Ukraine, Jan. 26, 2015.

Head of the Security Service of Ukraine Valentyn Nalyvaichenko speaks during news conference in Kyiv, Ukraine, Jan. 26, 2015.

Residents collect materials to cover broken windows after Saturday's attack in Mariupol, Ukraine, Jan. 26, 2015.

People visit their relatives at an emergency hospital after the shelling in Mariupol, Ukraine, Jan. 26, 2015.

Ukrainian parliament lawmaker and leader of Ukraine's Radical Party Oleh Lyashko, second left, greets Ukrainian soldiers near the town of Volnovakha, eastern Ukraine, Jan. 25, 2015.

A piece of an exploded Grad missile  outside an apartment building in Vostochniy, Mariupol, Ukraine, Jan. 25, 2015.