If I can trust https://en.wikipedia.org/wiki/LGM-30_Minuteman a Minuteman III (which is the current ICBM design used by the US) will land within 800ft (240m) of its intended target 50% of the time. And outside that circle the other 50%.
In other words, you can't really target a "building-size" target with these (with maybe exceptions like the Pentagon).
For nuclear payloads, a few hundred meters of error is much less of an issue, of course.
In other words, you can't really target a "building-size" target with these (with maybe exceptions like the Pentagon).
For nuclear payloads, a few hundred meters of error is much less of an issue, of course.