Any suicide attacks should be responded to, by assassinating all known living members of the sucicide attackers family. Then in affect a sucicide bomber, hostage taker, ect. would by his actions condemn all members of his family to death. This is how Russia should respond and all other countries who are attacked by terrorists. Also, all muslim countries should be put on notice that if one weapon of mass destruction is used by terrorists in an attack, then all of the worlds muslim countries will be destroyed by weapons of mass destruction.
When the Romans were unable to reach an accomodation with an enemy, and had found the enemy so intractable as to be incapable of keeping a peace agreement, they would, after conquering, kill every living thing in the enemy's territory: men, women, children, dogs, horses - everything.
The Romans did not do this out of savagery, but because they had determined over the course of hundreds of years that such measures were the only effective means of causing barbarians to fear Rome enough that they would stop committing depradations on the fringes of the Empire.