642. Victory at Nehavend by the Saracens; this places Persia in their power.
Istria and Dalmatia invaded by the Slavonians.
643. Rotharis publishes the Lombard code of laws.
644. Assassination of Omar; Othman succeeds. See [SARACENS CONQUER EGYPT], iv, 278.
646. Alexandria recaptured by the Greeks and again lost.
647. Abdallah advances, at the head of the Saracens, from Egypt to Roman Africa.
648. Constans II issues his Type, or model of faith.
649. Constans II orders the new exarch Olympius to enforce the adoption of his Type by the Western Church; it is rejected by the First Lateran Council.
650. The Moslems conquer Merv, Balkh, and Herat.[80]
Many orthodox churches are plundered by Constans II.