Gunther does not like the idea of having Siegfried killed , but Hagen promises him that he can then have the ring .
Gunther blames Siegfried 's death on Hagen , who replies that Siegfried had incurred the penalty of his false oath , and further , claims the ring on Siegfried 's finger by right of conquest . When Gunther objects , Hagen appeals to the vassals to support his claim .