943

By place

Byzantine Empire

• Spring - Allied with the Rus', a Hungarian army raids Moesia and Thrace. Emperor Romanos I buys peace, and accepts to pay a yearly tribute to the Hungarians. His frontiers now 'protected' on the Balkan Peninsula, Romanos sends a Byzantine expeditionary force led by general John Kourkouas to invade northern Mesopotamia.

Europe

• Caspian expeditions of the Rus': The Rus' under the Varangian prince Igor I of Kiev sail up the Kura River, deep into the Caucasus, and defeat the forces of the Sallarid ruler Marzuban ibn Muhammad. They capture the fortress city of Barda.
• Battle of Wels: A joint Bavarian–Carantanian army led by Bertold defeats the Hungarians near Wels, who are attacked at a crossing of the Enns River at Ennsburg.

England

• King Edmund I ravages Strathclyde and defeats the Scottish king Constantine II, who has reigned as king of Alba since 900. Constantine, ruler of the 'Picts and Scots', abdicates to enter a monastery and yields control of his realm to his cousin Malcolm I.
• The Trinity Bridge at Crowland, Lincolnshire is described, in the 'Charter of Eadred'.