According to a DoA report (in more ways than one), North Korea has 60 nuclear weapons and a 5,000 ton stockpile of chemical weapons.

Given the DoD's history of erroneous estimations, from Iraq's (non-existent) 100,000 tanks and million-man army in 1990 to their (non-existent) WMD program of 2002, it's probably safe to say that North Korea's arsenal consists of chlorine bleach and a number of VHS recordings of Dubya saying "nucular".