Other nations have a rather more robust, if perhaps primitive, way of dealing with terrorists:
Hezbollah kidnapped four Soviet diplomats from Beirut during the autumn of 1985. One they murdered straightaway, the others they held in captivity.
In response, the KGB seized the relative of a Hezbollah leader. As part of Moscow's anti-terrorism policy, the KGB castrated him, stuffed his testicles in his mouth, shot him in the head and sent the body back to Hezbollah. The KGB included a message that other members of the Party of God would die in a similar manner if the three Soviets were not released.
Shortly afterward, Hezbollah set free the three remaining Soviet hostages; Soviet interests in Lebanon were never similarly menaced again.