What are the objectives for weapons of mass destructions?

Answer 1

Weapons of mass destruction; are political tools for Internationale control

terrorism: 1. Political violence: violence or the threat of violence, especially bombing, kidnapping, and assassination, carried out for political purposes. [English. v. err, To be mistaken, or make a mistake. n. Terror.]

The above is technically incorrect - WMDs are not specifically designed for terror, though that is a major side effect of their nature, and it is trivial to employ such WMDs for political or terror purposes.

At their base level, all WMDs are weapons, and thus, have an intended (military) function.

Nuclear weapons are primarily blast and heat weapons, and thus, are intended for places where physical destruction is desired.

Biological weapons affect solely living things, and are thus targeted at specific populations of plants or animals, with the intent of causing mass injury and/or death to that population. Biological weapons do not necessarily have to be targeted at human populations; certain animal and plant populations (particularly those useful for food purposes) can also be targets for biological WMDs. Of all the WMDs, biologicals come closest to the idea that they are purely for terror purposes.

Chemical weapons are at their root, mass killing weapons with a secondary area-denial objective. Chemical weapons are generally intended to kill or drive off a defending force, and to contaminate the affected area. This effect is much the same a landmines - the contaminated area acts as a maneuver restriction on all forces in the area.

Toxin weapons are primarily limited-area killing weapons. That is, compared to other WMDs, toxin weapons have a much, much smaller area of effect (though, significantly larger than comparable conventional weapons), and are generally useful for killing a defending force, where the contamination of chemicals is undesireable (that is, cleaning up an area attacked with toxins is radically simpler than one that has been attacked by chemicals).