"and it will not explode with other than he non-nuclear high explosive in the weapon."
Of course, if you carelessly toss a lit cigarette and it hits that non-nuclear high explosive...;)
Actually you can set this stuff on fire and it will just burn with an oily smoke. If you cover it however with anything, like sand or your foot, it will explode and leave quite a large hole in the ground and spread pieces of you over a large piece of landscape.
Still won't go nuc, the HE has to be properly timed and sequenced for that.
Glad you put that smilie in. Otherwise readers might think that a lit ciggie could actually trigger an explosion.
I've burned HE for things other than blowing stuff up, and know a few folks who have used cemtex to heat their dinner.
HE needs a pressure-spike trigger to go off. Fire alone WON'T do it, and pressure triggers have to be at or over certain minimum levels. A smoke dropped on it PLUS a hammerblow at exactly the right time MIGHT do the job, but you'd have to be extraordinarily good with your timing.