Sentence:  "Mini-<WSD>nukes</WSD>" are "among the active unresolved nuclear issues in NATO at the moment," according to a Senate Foreign Relations Committee staff report. ... Mini-<WSD>nukes</WSD>, the report said, are the "new generation of tactical nuclear weapons which combine low and variable yield possibilities with enhanced radiation characteristics and which could be used with artillery and laser-guided or other 'smart' bombs." 
Meaning of the word marked with <WSD> tags:  A nuclear weapon.