In reality, Sunnis are not a sect. They are the continuation of Islam through the blessed companions of Prophet.
As for Jews, khalifs were never a friend of Jews.Hazrat umar expelled Jews from Arab and there is a whole chapter in malik muwatta and sahi Muslim about it
Book 45, Number 45.5.19:
Malik said, ''Umar ibn al-Khattab expelled the jews from Najran (a jewish settlement in the Yemen) and Fadak (a jewish settlement thirty miles from Madina). When the jews of Khaybar left, they did not take any fruit or land. The jews of Fadak took half the fruit and half the land, because the Messenger of Allah, may Allah bless him and grant him peace, had made a settlement with them for that. So Umar entrusted to them the value in gold, silver, camels, ropes and saddle bags of half the fruit and half the land, and handed the value over to them and expelled them."
Translation of Sahih Muslim, Book 19: The Book of Jihad and Expedition (Kitab Al-Jihad wa'l-Siyar) Chapter 20: EVACUATION OF THE JEWS FROM THE HIJAZ
Even if Jews succeeded in forming the Sunni sect, what have they achieved? Twelveres don’t call Sunni kafirs and even if Jews managed a few deviations, Islam is still alive in sunnis.So what is achieved by the Jews?
But Jews created a kafir sect, when they created shiaism.So it was worth the Jewish efforts.
A recent report in Al Hayat, one of the largest and most-respected pan-Arab dailies, charges that Iran is supporting more than 100 Shiite extremist organizations and militias in Syria and Iraq.
The newspaper, which is published in London and funded by Saudi Arabia, says the crimes of these groups are no less horrific than those of the Islamic State.