Here is the list (in formation) of Christian Leaders who endorsed the Tisha B’Av Repentance Declaration (located here):
“We the undersigned recognize the long and horrific history of antisemitic atrocities committed against Jews in the name of Christ. We repent for these actions, pray to God to continue turning the hearts of Christians to true love for His Chosen People, and submit this declaration to the representative of Israel and the Jewish People.”