People sit inside a bomb shelter in a maternity hospital during shelling in Donetsk, eastern Ukraine, on August 10, 2014. Artillery pounded the surrounded main rebel bastion of Donetsk in east Ukraine Sunday as the West warned Russia that any attempt to send "humanitarian" troops into the conflict-torn region would be deemed "unacceptable." Shelling meanwhile continued throughout the night and into Sunday in Donetsk, a one-million strong city that rebels now say has been surrounded by Ukrainian forces. AFP PHOTO / DIMITAR DILKOFF        (Photo credit should read DIMITAR DILKOFF/AFP/Getty Images)