The Battle of Krasny Bor was part of the Soviet offensive Operation Polyarnaya Zvezda in the Eastern Front of World War II. It called for a pincer attack near Leningrad to build on the success of Operation Iskra and completely lift the siege of Leningrad, in the process encircling a substantial part of the German 18th Army. The offensive near the town of Krasny Bor formed the western arm of the pincer. The Soviet offensive began on Wednesday, 10 February 1943, and produced noticeable gains on the first day but rapidly became a stalemate. The strong defense by the Spanish Blue Division and the German SS Polizei Division gave the German forces time to reinforce their positions. By February 13, the Soviet forces had stopped their offensive in this sector.

The siege of Leningrad (Russian: блокада Ленинграда; German: Leningrader Blockade) was a prolonged military blockade undertaken from the south by the Army Group North of Nazi Germany against the Soviet city of Leningrad (now Saint Petersburg) on the Eastern Front in World War II. The Finnish army invaded from the north, co-operating with the Germans, and completed the ring around the city.

The siege began on 8 September 1941, when the Wehrmacht severed the last road to the city. Although Soviet forces managed to open a narrow land corridor to the city on 18 January 1943, the Red Army did not lift the siege until 27 January 1944, 872 days after it began. The blockade became one of the longest and most destructive sieges in history, and it was possibly the costliest siege in history due to the number of casualties which were suffered throughout its duration. In the 21st century, some historians have classified it as a genocide due to the systematic starvation and intentional destruction of the city's civilian population.