Destroying a tunnel entrance is only a temporary setback, once its cleared the facilities inside would still be intact. I think if Israel were commit itself to doing a job like this, they do it right.
These idiots make me laugh (and cry). The powers that be say that a military strike would ONLY set them back 1 to 3 years. Hey, to me, that is better than them coming up with a bomb now! And we could hit them again in a year and set them back a few more years. This is insane.......