Prisoners cannot communicate with one another. Given that neither prisoner knows whether the other has confessed, it is in the self-interest of each to confess himself.

囚犯是不能相互沟通的，所以他们不知道对方是否认罪了，自身的利益将驱使他们做出各自的选择。

youdao

The result has been a grinding war of attrition between the religious and the secular in which neither side ever gains the upper hand but each at one time or another comes to believe that the other is prevailing.

ECONOMIST: Israel at 50