chynese wiping their snotty hands on all the clothes in mens ware (large dept store). witnessed and reported last Jan / Feb.
Firebombings killed and destroyed more. They were also unleased on 100's of cities, so there's that. Most buildings were wood and paper at the time, so fire worked best.
They did drop 2 nukes though, which detonated at altitude. Drone wars should prove to be even more deadly so no worries about fresh horrors.