> Isn't there a danger that the Supreme Court, on appeal, might quash a sentence on grounds of that description

Hard to imagine. The intended meaning of the phrase "weapon of mass destruction" is presumably defined in the statute.

Besides, he can and undoubtedly will be charged with many state counts of murder and assault as well.

If he somehow escapes the death penalty, he will never get out of prison.

BTW, his alleged statement that they blew up spectators at a footrace "in order to defend Islam" shows if true, just how staggeringly stupid and crazy and barbaric they were. One of them apparently set his bomb down - quite consciously - right next to the eight-year-old who was killed.

Later Dz. Tweeted, "Ain't no love in the heart of the city. Stay safe, people" and "I'm a carefree kind of guy."