Origins of Judaism
For centuries, the traditional understanding has been that Judaism came before Christianity and that Christianity separated from Judaism some time after the destruction of the Second Temple in 70 CE. Starting in the latter half of the 20th century, some scholars have begun to argue that the historical picture is quite a bit more complicated than that. In the 1st century, many Jewish sects existed in competition with each other, see Second Temple Judaism. The sects which eventually became Rabbinic Judaism and Early Christianity were but two of these. Some scholars have begun to propose a model which envisions a twin birth of Christianity and Judaism rather than a separation of the former from the latter. For example, Robert Goldenberg (2002) asserts that it is increasingly accepted among scholars that "at the end of the 1st century CE there were not yet two separate religions called "Judaism" and "Christianity"".
Daniel Boyarin (2002) proposes a revised understanding of the interactions between nascent Christianity and nascent Rabbinical Judaism in Late Antiquity which views the two religions as intensely and complexly intertwined throughout this period.
Anti-Zionism
Most Orthodox religious groups have accepted and actively support the State of Israel, even if they have not adopted "Zionist" ideology. The World Agudath Israel party (founded in Poland) has at times participated in Israeli government coalitions. Most religious Zionists hold pro-Israel views from a right-wing viewpoint. The main exceptions are Hasidic groups such as Satmar Hasidim, which have about 100,000 adherents worldwide, as well as numerous different, smaller Hasidic groups, unified in America in the Central Rabbinical Congress of the United States and Canada and in Israel in the Edah HaChareidis.