[jyl]

So, the idea seems to be that US intelligence knew the exact and precise location of Saddam's WMD arsenal in March 2003. Precisely enough to target a nuclear strike?

Well, US intelligence was wrong even in the basic assessment of whether Saddam had a WMD arsenal. They said he did. Now we know he didn't, the US government's own post-invasion investigation has concluded there is no evidence of such a WMD arsenal pre-war, Colin Powell has admitted that his speech to the UN in which he laid out America's WMD evidence is a permanent blot on his record, and only those desperately in denial still pretend otherwise. No reasonable person would think US intelligence was capable of precisely locating the fictional WMD stash, given that it got even the existence of WMD wrong.

Given this poor record, I wouldn't trust the government to launch a preemptive nuclear strike on suspected WMDs. Especially when the CIA tells us "yes, we are slam-dunk certain where they are, right here in the middle of downtown Tehran."