Old Artillery shwlls which has been placed in a warehouse somewhere and forgitten about did not count as a chemical weapons programme as the Bush II admin claimed Iraq had and they did not try to present it as such.
Legally, would people who died as a result of jumping to their deaths be considered to have been murdered by the conspiracy, or would that be a different crime? Isn't there something called a legal fiction where you can argue that people normally don't jump from buildings, and thus they would be legally considered as having been murdered by falling from the building or something like that?
There was no claim about a chem program, but there was a widespread (incorrect) belief in a nuclear program and a decision was made not to take a chance on it.
There were chemical weapons found, and used, and their existence is not in doubt. The idea that there was a comprehensive chemical weapon program of the likes that Assad had recently was one that nobody was claiming or believed, as for one thing, sanctions killed them, but for another, Saddam simply could not risk another Halabja in the post-Cold War era, as despite his craziness and slip into fundamentalism and more overt anti-Shiite racism, he knew that he could not give the world a reason to depose him, because he was on thin ice as it was.
As for Bin Laden being executed, which jurisdiction apply? New York, Washington DC, the States where the airplanes took off? I don't know the legalities, but not all states in the USA have death penalty