Considering Israel and the US are bombing Iran’s nuclear facilities because they have “weapons of mass destruction”, if Iran really did have such weapons, wouldn’t bombing the facilities they’re held in cause them to explode, or cause an evident ripple at least? I may be imagining this in a way cartoonier way than military weapons actually work, but I’m preparing myself for some incredibly annoying debates.
A nuclear bomb requires precise explosions delivered by shaped charges to achieve fission. You could strap C4 to the sides of a nuke and set them off, and you probably wouldn’t create a nuclear explosion. It’s a very delicate kind of weapon with very sophisticated engineering.
And even “precise” would be understating it. Not only is a specific shape of the detonation required, but timing is crucial too. Otherwise you’ll end up with a fizzle.
But yes, the main concern is nuclear contamination in the target area.