Balalaika
The balalaika is Russian long-necked lute with three strings, seen in everything from Peter the Great's grand orchestral procession of 1715 to the classic 1969 film Dr. Zhivago.
Photo from Roosebeck Instruments website, https://www.handcraftedworldinstruments.com/Roosebeck_Balalaika_Prima_p/bllp.htm