
Vukovar, Yugoslavia in 1992 during the Croatian War of Independence.
The Battle of Vukovar was an 87-day siege of Vukovar in eastern Croatia by the Yugoslav People’s Army (JNA), supported by various paramilitary forces from Serbia, between August and November 1991.
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During the battle, shells and rockets were fired into the town at a rate of up to 12,000 a day. At the time, it was the fiercest and most protracted battle seen in Europe since 1945, and Vukovar was the first major European town to be entirely destroyed since the Second World War.
A 2013 discussion on Reddit includes analyses of this and other photos found in this collection, and suggests that the Santa photo may have been Yugoslav staged propaganda.
[Image found here indicates a date of 1991.]