Granted, this was the sort of cease-fire during which heavy combat was frequent, including fighting that destroyed much of the Donetsk airport.
But on Monday, DNR leader Aleksandr Zakharchenko admitted what has been obvious for some time, and tweeted after a period of particularly heavy fighting in Donetsk.
According to a translation provided by The Interpreter, the first tweet says "after today's shelling of Donetsk with rockets, the ceasefire, even formally, has to be considered abandoned."
In Zakharchenko's second tweet, the prime minister conveyed a more combative message.
He wrote "an hour ago, the [Ukrainians] carried out a strike near the old terminal, after which our artillery carried out a strike on the dillweeds' positions near Peski."
Ukraine and the Russian-backed separatists in the east of the country had reached a ceasefire in September during a round of peace talks in Minsk.
The ceasefire, which would last throughout the duration of the still-ongoing peace talks, essentially froze the conflict's front lines — but without providing any actual cessation of hostilities.
Fighting between the Ukrainian government and the separatists has been particularly fierce around the city of Donetsk and the often-contested city's airport.
Both sides have exchanged artillery fire, leading to civilian deaths and the almost complete destruction of the airport's infrastructure.
DNR separatists claimed that the explosion was the result of a Ukrainian rocket hitting a rebel stronghold in the city.
Ukrainians have denied that they were responsible for the strike.
Regardless, the DNR has seized on the explosion as reason enough to declare that the barely holding ceasefire has come to an all-too-predictable close.
Source: Business Insider