GENEVA (AP) — Peace talks aimed at forging a path out of Syria’s civil war have reached an impasse — with no guarantee of continuing — after five days of sparring over responsibility for mounting violence back home and President Bashar Assad’s future, government and opposition delegates said Friday.

Echoing the position of the rival camps, senior U.S. and Russian officials traded accusations over who was to blame for the stalemate, adding to the polarization of a war that has killed 130,000 people, displaced millions, destroyed a country and threatens to engulf the Middle East in religious conflict.