East Ukraine has suffered the worst violence in more than a week, as fighting between pro-Russian rebels and government troops in the region killed at least 12 people and wounded 32.
Russia's War Against Ukraine
Associated Press: 12 killed in worst east Ukraine shelling in a week
Smoke from a burning fuel dump at the Donetsk airport can be seen from a pro-Russia separatists checkpoint on Sept. 23, 2014.
