Heraclius issues a decree that all Jews must become Christian; a massacre follows around Jerusalem and in Galilee (Israel), some survivors fleeing to the Daraa area.[2]
King Suintila is overthrown after a 10-year reign by his son Sisenand, with the aid of Dagobert I. The Visigothic nobles offer him a 500-pound plate made of pure gold. Sisenand becomes new king of the Visigothic Kingdom and declares his father a tyrant for his many crimes.
Emperor Tai Zong sends envoys to the Xueyantuo, vassals of the Eastern Turkic Khaganate, bearing gold and silk in order to obtain the release of enslaved Chinese prisoners, who were captured during the transition from the Sui to the Tang dynasty from the northern frontier. The embassy succeeds in freeing 80,000 men and women, who are safely returned to China.
Tai Zong establishes a new Daoistabbey, out of gratitude for Daoist priests who had apparently cured the crown prince of an illness.
Part of Samo's rebellion, Alciocus leads 9,000 Bulgars from Pannonia to refuge with Dagobert (who massacres them), then, with 700 survivors, settles with the Wends, under the protection of Walluc.
Winter – Cadwallon is besieged by King Osric at York; he successfully breaks out of the city with all his forces, by surprise, and destroys Osric's army.[12]
Siege of Hira: The Muslim Arabs (15,000 men) under Khalid attack the fortress city of Hira. After a brief fight the citizens surrender, and bring gifts to Khalid.[16]
Battle of Ein ut Tamr: The Muslim army attacks a Persian frontier post located south of Anbar. The Arab Christian auxiliaries are overrun and surrender.
King Dagobert I is forced by the Austrasian nobles to put his 3-year-old son Sigebert III on the throne, ceding royal power in Austrasia. He frees himself from dependence on Pepin of Landen, and extends his rule over the Bretons (approximate date).
Battle of Heavenfield: Oswald, possibly accompanied by a force of Scots (or Picts), defeats and kills Cadwallon with a Welsh army near Hexham (northern England). He reunites Deira with Bernicia, and becomes king of Northumbria.
February 4 – Battle of Dathin: Rashidun forces under Yazid ibn Abi Sufyan defeat the Christian Arabs around Gaza. The Muslim victory is celebrated by the local Jews, who have been a persecuted minority within the Byzantine Empire.[22]
Battle of al-Qaryatayn: The Muslim Arabs under Khalid defeat the Ghassanids at Al-Qaryatayn, after the inhabitants resist his proposals. His army conquers and plunders the city, before proceeding to capture other towns in the area.[24]
Battle of Marj Rahit: A Muslim Arab army under Khalid defeats the Byzantine forces (15,000 men) and their Ghassanid allies. After the battle he sends a mounted column to the outskirts of Damascus, to plunder the region.[25][page needed]
Battle of Bosra: Muslim forces under Khalid besiege the Byzantine and Christian Arab garrison (12,000 men) at Bosra. After a few days the fortress city surrenders; Khalid imposes a payment of tribute on the inhabitants.
September 19 – Siege of Damascus: Muslim Arabs under Khalid conquer Damascus as the first major city of the Byzantine Empire. Damascan refugees are given a guarantee of safety to retreat to Antioch.
Tai Zong orders the construction of the Daming Palace in Chang'an. He builds the summer palace for his retired father, Emperor Gao Zu, as an act of filial piety.
Summer – Heraclius summons a church assembly at Antioch, and scrutinises the situation. He accepts the argument that Byzantine disobedience to God is to blame for the Christian disaster in Syria. Heraclius leaves for Constantinople with the words, 'Peace be with you Syria — what a beautiful land you will be for your enemy'.[30]
Rothari (formerly duke of Brescia) marries widowed Queen Gundeberga, and succeeds Arioald as king of the Lombards. During his reign, he puts many insubordinate nobles to death.
The city of Basra (modern Iraq) is founded on the Shatt al-Arab, at the head of the Persian Gulf. The port will become a major trading center for commodities from Arabia, India, and Persia.
The Muslims replace Zoroastrianism with Islam in Mesopotamia (later Iraq); they do not force their conquered subjects to embrace the Islamic faith, but they do require acceptance of the Quran as the doctrine of divine teaching, and will oblige their subjects to learn Arabic (approximate date).
Emperor Heraclius creates a buffer zone (or no man's land) in the heartland of Asia Minor. In the mountainous terrain of Anatolia, the Byzantine forces develop a system of defensive guerrilla warfare. The strategy is known as ‘shadowing warfare’, as it avoids battle with major Muslim invaders, and instead attacks raiding parties on their return when they are laden with booty, captured livestock or prisoners.[37]
July 4 – Heraklonas, age 12, son of Heraclius, obtains (through the influence of his mother Martina) the title of Augustus. This brings him in rivalry with his elder half-brother Constantine.
King Oswald and his Northumbrian army besiege and conquer Edinburgh (Scotland). His half-brother, Oswiu of Bernicia, marries Princess Rhiainfelt, heiress of North Rheged ("Old North"). Northumbria embraces North Rheged in a peaceful takeover, and Oswiu becomes a sub-king (approximate date).
Umar I dismisses Khalid ibn al-Walid after the conquest of Syria, owing to his ever-growing fame and influence. He wants the Muslims to know that victory comes from God, not his general.