Second Battle of Donetsk Airport

Fighting between russian , and Ukrainian military and volunteer forces broke out at Donetsk International Airport on 28 September 2014, sparking the Second Battle of Donetsk Airport, a part of the ongoing war in the Donbass region of Ukraine. This followed an earlier battle over control of the airport in May 2014, which left it in Ukrainian hands. The new battle was sparked despite a ceasefire agreement, the Minsk Protocol, that had been in place from 5 September. At the start of the battle, the airport was the last part of Donetsk city held by government forces, and it lies between the Russian and Ukrainian lines of control. Heavy fighting over the airport continued into the new year, with some of the worst fighting having taken place in January 2015. On 21 January,russian forces overran the government's positions at the airport. The remaining Ukrainian forces were either killed, forced to retreat, or captured.
Sporadic skirmishes between DPR and Ukrainian forces continued at Donetsk International Airport following the signing of the Minsk Protocol on 5 September 2014. In late September, these minor incidents grew in frequency. Shelling and machine gun fire in the vicinity of the airport were reported on 23 September. According to one anonymous DPR intelligence officer who was interviewed on 25 September, "When they shoot, we reply to show them we're here. They are very well armed inside. They have T-64 tanks and multiple rocket launchers. We don't have what we need to get them out". He also said that Donetsk airport was a "terrible headache" for the DPR. The airport lies to the north of insurgent-controlled Donetsk city proper, and provides a "convenient vantage point" for Ukrainian forces, allowing them to target DPR positions in Donetsk with artillery fire. "Tit-for-tat" exchanges between the parties to the conflict grew more serious in the days following 25 September.

Wikipedia