Veliky Novgorod sat 58 degrees north on the Volkhov River, where it carried the trade of Scandinavia and the Hanseatic ports south to Kievan Rus and on to Constantinople. Its veche, a public assembly that met in the marketplace, hired and fired its princes by acclaim. In a Russia of hereditary princely thrones, this was already strange. By the 1160s, the most powerful prince in Rus was Andrei Bogolyubsky of Vladimir-Suzdal, who in March 1169 had sacked Kiev itself with a coalition of Smolensk, Suzdalian, and Chernigovian forces. The grand prince he deposed there, Mstislav II of Kiev, had a son named Roman ruling in Novgorod. To pacify the north, Andrei needed Roman gone. He sent an army to take him out and to reinstall his own preferred candidate.

The Suzdalian army that approached Novgorod through the winter of 1169–1170 was, by every account, the larger force. The Novgorodians, fighting at home and on familiar ground, met them outside the walls and broke them. The Suzdalian losses were severe enough that the chronicles speak of the city as having been miraculously delivered, and within decades the legend of the icon weeping above the rampart had taken hold. By the late fifteenth century, two large icons of the Sign of the Theotokos had been painted to commemorate the event; both survive, one in the Novgorod Museum, the other in the State Russian Museum in Saint Petersburg. The painters added crowds, towers, descending angels. They left out, as legend tends to do, the one detail that defined what came next.

Andrei Bogolyubsky did not need to take Novgorod by storm. He needed only to cut off the grain that came up from the south. The Suzdalian principalities controlled the river routes, and within a year of their tactical defeat in the snow, they applied an economic blockade that the Novgorodians could not break. Hungry and isolated, in 1170 the city expelled Roman Mstislavich, who had been the cause of the war, and accepted a prince approved by Andrei. The following year they accepted Andrei's own son Yury Bogolyubsky on the throne. The republic survived as an institution. Its independence in foreign policy did not. Andrei Bogolyubsky remained the dominant prince in Rus until his assassination in 1174, by which time the lesson had been absorbed: a free city upstream from grain country is only as free as its winter pantry.

Veliky Novgorod is one of the oldest cities in Russia, a UNESCO World Heritage Site whose Detinets, the kremlin on the Volkhov's left bank, still encloses the eleventh-century Saint Sophia Cathedral. Inside, the icon at the center of the legend has been venerated for more than eight hundred years. Across the river, the Yaroslav's Court trading quarter preserves the layout of the medieval merchant town that the siege failed to subdue militarily and crippled economically. In the surrounding earth, archaeologists have recovered more than a thousand birch-bark letters written by the literate citizens of the republic, mundane scraps about debts and grain prices and absent husbands, the everyday voice of the people behind the walls in 1170.