The Dabru Emet (Heb. דברו אמת "Speak Truth") is a document concerning the relationship between Christianity and Judaism. It was signed by over 220 rabbis and intellectuals from all branches of Judaism, as individuals and not as representing any organisation or stream of Judaism.
The Dabru Emet was first published on September 10th, 2000, in the New York Times, and has since been used in Jewish education programs across the U.S. While affirming that there are theological differences between these two religions, the purpose of Dabru Emet is to point out common ground and a legitimacy of Christianity, for non-Jews, from the Jewish perspective. It is not an official document of any of the Jewish denominations per se, but it is representative of what many Jews feel.
Read more about Dabru Emet: Controversy, Reaction