I'd like to see this continued.
Ah, another one, thanks for that.

you write i'll comment
Well, I would hope so.
Sargon, count me as another of your interested readers, too

.
Jolly good!
Anyone else?
In the meantime and for your information, here is a list so that you can keep tab of who's who leader-wise:
List of Rulers relevant to story so far from 660 to 710
Empire of the Romans
641-668 Constans II Pogonatus (assassinated)
646-647 Gregory (rival) (killed in battle)
649-653 Olympius (rival) (killed by plague)
668-685 Constantine IV (early death by dysentery)
669 Mezezius (rival) (executed)
668-681 Heraclius [II]
668-681 Tiberius (II) [III] (both co-emperors, later deposed and exiled by their brother Constantine)
685-695 Justinian II Rhinotmetos (overthrown & exiled)
695-698 Leontius (Leo) [II] (deposed, retired to monastery)
698-705 Tiberius III Apsimar (II) [IV] (deposed, rehabilitated as General)
705- Justinian II Rhinotmetos (restored)
706- Tiberius IV (III) [V]
The Caliphate
Rashidun Caliphs
656-661 Ali ibn Abi Talib (the only caliph universally accepted by Sunnis and Shi'as)
661 Hasan ibn Ali Was considered by some Muslims at that time as a caliph, for 6 months
Umayyad Caliphs
661–680 Muawiyah I ibn Abi Sufyan
680–683 Yazid I ibn Muawiyah
683–684 Muawiyah II ibn Yazid
684–685 Marwan I ibn Hakam
685–705 Abd al-Malik ibn Marwan
705– Al-Walid I ibn Abd al-Malik
Kingdom of the Visigoths
649–672 Reccesuinth
653 Froia (rival)
672–680 Wamba
672 Hilderic (rival)
672-673 Paul (rival)
680–687 Erwig
687–702 Ergica
693 Suniefred (rebel)
694– Wittiza (joint ruler with father Ergica until 702)
Khanate of the Bulgars
605?–665 Kubrat
665–668 Bat Bajan
668–694/5 Asparuh
c680-? Kuber (after fall of Great Bulgaria, led part of the Bulgars in migration ultimately to Syrmia)
694/5– Tervel
Khaganate of the Khazars
c650-c665? Irbis?
c665-c669? Khalga?
c669-c690? Kaban?
c690- Ibousiros Gliabanos
Popes of the Holy See of St. Peter in Rome
657-672 St. Vitalian
672-676 Adeodatus II
676-678 Donus
678-681 St. Agathon
681-683 St. Leo II
683-685 St. Benedict II
685-686 John V
686-687 Conon
687-701 St. Sergius I
701-705 John VI
705-707 John VII
708 Sisinnius
708- Constantine
Patriarchs of Constantinople
654-666 Peter
667-669 Thomas II
669-675 John V
675-677 Constantine I
677-679 Theodore I
679-686 George I
686-687 Theodore I (restored)
687-693 Paul III
693-705 Callinicus I
705- Cyrus
Kingdom of the Lombards
Second Bavarian Dynasty
653-661 Aripert I
661-662 Perctarit and Godepert
Beneventan Dynasty
662-671 Grimuald
671 Garibald
Third Bavarian Dynasty
671-688 Perctarit (restored from exile)
688-689 Alahis (rebel)
688-700 Cunincpert
700-701 Liutpert
701 Raginpert
701- Aripert II
Sargon