964 - Rus king started campaign

Russia
Svyatoslav started a 7 year long campaign against Bulgars, Khazars and Byzantines.
Ireland
Brian Boru was was only Twelve years old and he was attending school at an Irish monastery. While Brian was at the monastery his home village was raided by Vikings from the city of Limerick. Brian's father was killed during the raid and power shifted to his son, Latchna
Spain
Vikings arrived again in Galicia, but were met by forces led by the bishop of Mondonedo, Rosendo of Celanova.