BERLIN (Reuters) - Talks to form a three-way German ruling coalition will continue into Saturday, if needed, Peter Tauber, secretary general of Germany s conservative Christian Democratic Union (CDU), said early on Friday.  We still believe that it s worth it to work at it with our full energy,  Tabuer told reporters after a marathon session of talks among the three political blocs broke up.  On the other hand, it s evident that it s difficult.  
German coalition talks could stretch into Saturday: conservative leader