BERLIN, Dhu-AlHijjah 7, 1437, Sep 9, 2016, SPA -- The leader of Germany's Christian Social Union told Chancellor Angela Merkel on Friday that he would not join forces with her Christian Democrats - the CSU's coalition allies - at a key party congress unless she changed her open-door refugee policy, Reuters reported. In a fresh attack on the chancellor's pro-refugee policies that have cost the sister parties support, Bavaria state premier Horst Seehofer said her refusal to change course was only helping the far-right Alternative for Germany (AfD). He threatened to skip the CDU's annual party congress in December - an unprecedented blow to the usual unity of the conservative bloc nine months before next September's election. --SPA 21:17 LOCAL TIME 18:17 GMT www.spa.gov.sa/w