Shuāng / fāng / yǐ / jīng / jiàn / zài / xián / shàng / tán / pàn / suí / shí / kě / néng / pò / liè

双方已经箭在弦上，谈判随时可能破裂。

The two sides are at a point where action is inevitable, and the negotiations could break down at any time.