HN03 is used for making Nitrogen Mustard gas..a very nasty blister agent which targets mucous membranes. Eyes, nose, throat, lungs, etc..
Nitric acid is NOT a WMD.
Neither is chlorine, amonia, or sulfuric acid.
Don’t dilute the definition to suit your wishes.
There is a great difference between WMD and TIC (Toxic Industrial Chemicals) which maybe weaponized but are not WMD.