Ukrainian forces have ramped up their offensive on pro-Russian rebels in the eastern city of Donetsk. Over the weekend Ukraine launched its heaviest shelling of the city to date after rejecting a humanitarian ceasefire proposed by the rebels. Hundreds of thousands of people have fled amidst the fighting. On Sunday, the city’s main hospital was hit by shells for the second time in less than a week. Earlier today, rockets reportedly hit a prison in Donetsk, taking out the alarm system and allowing more than 100 prisoners to flee.