Mstislav's life was spent in constant warfare with Cumans (1093, 1107, 1111, 1129), Estonians (1111, 1113, 1116, 1130), Lithuanians (1131), and the princedom of Polotsk (1127, 1129).
Kehidupan Mstislav dihabiskan dengan peperangan konstan dengan Cuman (1093, 1107, 1111, 1129), Estonia (1111, 1113, 1116, 1130), Lituania (1131), dan pangeran Polotsk (1127, 1129).