Igor of Kiev is killed while collecting tribute from the Drevlyans in 945.

The Byzantine historian and chronicler, Leo the Deacon (born around 950), describes how Igor met his death: "They had bent down two birch trees to the prince’s feet and tied them to his legs; then they let the trees straighten again, thus tearing the prince’s body apart.")

He is avenged by his wife, Olga of Kiev.

The Primary Chronicle blames his death on his own excessive greed, indicating that he was attempting to collect tribute a second time in a month.

As a result, Olga changes the system of tribute gathering (poliudie) in what may be regarded as the first legal reform recorded in Eastern Europe.

Constantine Zuckerman, drastically revising the chronology of the Primary Chronicle, argues that Igor actually reigned for three years, between summer 941 and his death in early 945.

He explains the epic thirty-three-year span of his reign in the chronicle by its author's faulty interpretation of Byzantine sources.

Indeed, none of Igor's activity are recorded in the chronicle prior to 941.

Sviatoslav, a member of the Varangian Rurik dynasty, succeeds his father as duke of Kiev; his mother, Olga, rules as regent.

Virtually nothing is known about Sviatoslav's childhood and youth, which he spent reigning in Novgorod.

Sviatoslav was tutored by a Varangian named Asmud (meaning "quick as a leopard").

The tradition of employing Varangian tutors for the sons of ruling princes will survive well into the eleventh century.

The founders of the Būyid confederation are ‘Alī ibn Būyah and his two younger brothers, al-Hassan and Aḥmad, who are the sons of Buya, a fisherman from Lahijan in Tabaristan.

Originally a soldier in the service of the Ziyārīds of Ṭabaristān, ‘Alī had been able to recruit an army to defeat a Turkish general from Baghdad named Yaqut in 934.

Over the past nine years, the three brothers have gained control of the remainder of the 'Abbāsid Caliphate.

The Caliph receive the secretary of Buyid chief to make terms of peace, which the Caliph accepts.

Thus invited, Ahmad enters Baghdad, and under the title of Amir al-Umara (Amir of Amirs) assumes the supreme command, demanding of al-Mustakfi that the Buyids be recognized as the sole rulers of the territory they control.

The Caliph makes abject submission to the Amir, whose name, in addition to al-Mustakfi's, is now by his command stamped upon the coinage, and recited in the public prayers; but it is all in vain.

Abu Muhammad al-Hasan al-Hamdani is a noted grammarian, wrote much poetry, compiled astronomical tables, and devoted most of his life to the study of the ancient history and geography of Arabia.

His biography is scanty, despite his extensive scientific work.

Al-Hamdani’s family originally lived in al-Marashi, later moving to Sanaa' before 893, the year in which he was born.

His father, a traveler, had been to Kufa, Baghdad, Basra, Oman and Egypt.

Al-Hamdānī eventually left for Mecca, studying there for more than six years.

He then left for Sa'dah and stayed for some time, gathered information on Khawlaan.

He later returned to San'a and gathered information on Himyar.

His outspokenness and his opposition to the local politics led him to prison.

Released after two years, he left for Rayda for the protection of his tribe, compiling most of his books there and remaining until his death in 945.

His Geography of the Arabian Peninsula (Sifat Jazirat ul-Arab) is by far the most important work on the subject.

The Venetian senate in 945 forbids captains sailing in the east (Syria-Egypt) to allow any Jewish merchants on board, a decree probably intended to maintain Venetian Christian control of finances rather than to actively promote anti-Jewish attitudes.

Within the Kingdom of Italy, Hugh has intensified his existing habit of giving any available offices or lands to relations, including his numerous legitimate and illegitimate progeny, and a small circle of old and trusted friends.

The effect this has had on Italian nobles, who see this as threatening themselves, eventually results in rebellion.

In 941, Hugh had expelled Berengar of Ivrea from Italy and abolished the March of Ivrea.

In 945, Berengar returns from exile in Germany and defeats Hugh in battle.

By a diet Berengar holds at Milan, Hugh is deposed, though he manages to come to terms by which he nominally keeps the crown and the title rex (king) but returns to Provence, leaving his son Lothair as nominal king, but with all real power in Berengar's hands.

Welsh law is codified and set down in writing for posterity at a conference held around 940 to 945 at Ty Gwyn ar Daf, an occasional residence of Hywel's near Whitland, Carmarthenshire.

The council had the purpose of compiling and enacting the code of laws, which are still known as "the Laws of Hywel the Good."

Edmund conquers Strathclyde in 945, but cedes the territory—Cumberland and Westmorland—to King Malcolm I of Scotland in exchange for a treaty of mutual military support.

Edmund thus establishes a policy of safe borders and peaceful relationships with Scotland.

The revival of monasteries in England begins during his reign.

One of Edmund's last political movements of which there is some knowledge is his role in the restoration of Louis IV of France to the throne.

Louis, son of Charles the Simple and Edmund's half-sister Eadgifu, had resided at the West-Saxon court for some time until 936, when he had returned to be crowned King of France.

He had been captured in the summer of 945 by the Norsemen of Rouen and subsequently released to Duke Hugh the Great, who held him in custody.

The chronicler Richerus claims that Eadgifu wrote letters both to Edmund and to Otto I in which she requested support for her son.

Edmund responds to her plea by sending angry threats to Hugh, who brushes them aside.

Amlaíb's cousin Blácaire is driven out in 945, perhaps as a result of the sack of Dublin, and Amlaíb replaces him as ruler of Dublin.

Amlaíb is allied with Congalach and may have gained power with his assistance.

Congalach and Amlaíb fight against Ruaidrí ua Canannáin, a rival for the High Kingship who belongs to the Cenél Conaill, based in modern County Donegal.

The two defeat part of Ruaidrí's army in 945 in Conaille Muirtheimne (modern County Louth).