[3pt14159]

ICBM delivered nuclear bombs are no longer the primary threat for cities in the west. Kinetic bombs are harder to intercept with lasers or projectiles and suitcase nukes are essentially impossible to stop from entering a port.

Yield doesn't truly matter. Even a couple thousand people dying on 9/11 was enough to cause mass despair.

[xnull6guest]

It's true that there are many challenges and threats the nation faces and that it would be a trivial exercise to attempt to enumerate them all.

On the nuclear front today it would be impossible to intercept a barrage of ICBMs - it is a fact of life that some strikes in a barrage would go through - this is exacerbated by new delivery vehicles that can strike in under 40 minutes from across the globe.

You are right to mention that this is just one of the many emerging challenges the nation is compelled to defend.