(01 of12)
Open Image ModalIn this Sunday, Jan. 25, 2015 pool photo, Ukrainian parliament lawmaker and leader of Ukraine's Radical Party Oleh Lyashko, second left, greets Ukrainian soldiers while visiting their position near the town of Volnovakha, in eastern Ukraine. (AP Photo/Osman Karimov, Pool) (credit:ASSOCIATED PRESS)
(02 of12)
Open Image ModalA man walks by a burned car and a piece of exploded Grad missile, outside an apartment building in Vostochniy district of Mariupol, Eastern Ukraine, Sunday, Jan. 25, 2015. (AP Photo/Evgeniy Maloletka) (credit:ASSOCIATED PRESS)
(03 of12)
Open Image ModalPeople examine their burned cars, parked outside an apartment building in Vostochniy district of Mariupol, Eastern Ukraine, Sunday, Jan. 25, 2015.(AP Photo/Evgeniy Maloletka) (credit:ASSOCIATED PRESS)
(04 of12)
Open Image ModalA piece of an exploded Grad missile is photographed outside an apartment building in Vostochniy, district of Mariupol, Eastern Ukraine, Sunday, Jan. 25, 2015. (AP Photo/Evgeniy Maloletka) (credit:ASSOCIATED PRESS)
(05 of12)
Open Image ModalA man tries to remove pieces of broken glass from a window in a school damaged by a Grad missile in Vostochniy district of Mariupol, Eastern Ukraine, Sunday, Jan. 25, 2015. (AP Photo/Evgeniy Maloletka) (credit:ASSOCIATED PRESS)
(06 of12)
Open Image ModalAlexandr Atorvin, foreground, speaks to his visiting relatives in a hospital after being injured during an attack on Saturday, in Mariupol, Eastern Ukraine, Sunday, Jan. 25, 2015. (AP Photo/Evgeniy Maloletka) (credit:ASSOCIATED PRESS)
(07 of12)
Open Image ModalLocal residents look at a burned car outside an apartment building in Vostochniy district of Mariupol, Eastern Ukraine, Sunday, Jan. 25, 2015. (AP Photo/Evgeniy Maloletka) (credit:ASSOCIATED PRESS)
(08 of12)
Open Image ModalVolunteers carry humanitarian aid after Saturday's attacks, in Mariupol, Ukraine, Sunday, Jan. 25, 2015. (AP Photo/Evgeniy Maloletka) (credit:ASSOCIATED PRESS)
(09 of12)
Open Image ModalA woman resident passes by a burning house in Mariupol, Ukraine, Saturday, Jan. 24, 2015. (AP Photo/Sergey Vaganov) (credit:ASSOCIATED PRESS)
(10 of12)
Open Image ModalAn officer of the Russian riot police force OMON stands guard outside the offices of Crimean Tatar TV channel ATR in Simferopol on January 26, 2015. (MAX VETROV/AFP/Getty Images) (credit:MAX VETROV via Getty Images)
(11 of12)
Open Image ModalPassengers killed when a trolley bus was damaged by a mortar shell are seen in interior of the bus and outside, left, in Donetsk, eastern Ukraine, Thursday, Jan. 22, 2015. (AP Photo/Igor Ivanov) (credit:ASSOCIATED PRESS)
(12 of12)
Open Image ModalA Russian backed separatist rebel lies on the ground under shelling in the Kievsky district, 3 km from the Airport, in Donetsk, Ukraine, Thursday, Jan. 22, 2015.(AP Photo/Manu Brabo) (credit:AP)