[null and void]

It doesn't have to work perfectly.

It is sufficient that it introduces uncertainty into a potential opponent's calculations.

[Southack]

"It is sufficient that it introduces uncertainty into a potential opponent's calculations."

Precisely.

Though it does help that along with the enemy's new uncertainty of our defensive capability, that the enemy also has to know with certainty that we will retaliate offensively with a nuclear response EVEN IF their nuclear attack is entirely shot down.

[El Gato]

It doesn't have to work perfectly.

It is sufficient that it introduces uncertainty into a potential opponent's calculations.

With Little Kim, it matters if it works. He's too loony to care about effectiveness of his attack or possible retaliation.