re: Look at Israel
More terrorism is Israel led to more conservatism and retaliations which led to even more terrorism , etc....
And even with a wall, they still can kill. The most desperate are the most imaginative and they always have the element of surprise in their favor.
Sorry, but waging war isn't the solution. No element of surprise and always, the innocents get killed first. Then, there's resentment, humilation and that creates a much more deadly weapon than those unfindable weapons of mass destruction.
Raoul