I wonder what the yield is. While the media typically makes little distinction and instead prefers the "OMG NUCLEAR!" fearmongering, there's a huge difference between a few-kiloton tactical bomb and a multi-megaton strategic weapon.
People who think any nuclear war would wipe out civilization are misinformed. It'd take an all out, total nuclear war between the US and Russia to accomplish that. Hundreds, if not thousands, of nuclear weapons have been detonated over the years, including a few insanely high-yield weapons (The Tsar Bomba being the most insane). We're still here, no nuclear winter.
J_A_B