The United Nations put a ban on building new weapons of mass destruction.
Maybe they should, but they couldn't.
Weapons of mass destruction
The U.S. believed that Iraq possessed weapons of mass destruction
There is no definitive answer to this - only theories. There was the claim that Iraq was building weapons of mass destruction. The Bush administration later abandoned that claim, and didn't offer anything in its place.
In actuallity they should not, but some will so others have to as a deterent.
There was a concern that Iraq had weapons of mass destruction.
What are some mass destruction weapons in Iraq?
There are many weapons that are considered mass weapons of warfare. Weapons of mass destruction cause great destruction and death in great numbers. Weapons such as bombs and missiles, nuclear devises and chemicals are considered weapons of mass destruction.
Inspectors in Iraq found evidence of chemical weapons, biological weapons, and ballistic missiles in violation of United Nations resolutions. They also uncovered facilities and programs designed to develop weapons of mass destruction.
Weapons of Grass Destruction was created on 2007-04-09.
Weapons of Class Destruction was created on 2005-04-12.