Mohamed ElBaradei, Director General of the International Atomic Energy Agency
Definition of a Metal Gear: A designation to various models of bipedal tanks. Metal Gear are behemoth machines capable of decimating lesser machines. Metal Gear have the distinction of being nuclear capable, firing warheads from their rail gun,or other launch system, eliminating the need for a missile, or launchpad allowing them to attack targets from anywhere in the world, on any kind of terrain. This peaked with Metal Gear REX which was sophisticated enough to launch a nuke from anywhere on earth and hit a target anywhere in the world, REX also had the distinction of being completely untraceable.
Despite the destruction of Metal Gear REX it is believed Revolver Ocelot--one of the terrorists at Shadow Moses-- Is responsible for leaking the REX data to unstable regions of the world, leading to the possible creation of more Metal Gear's in the same vein as REX. The NGO Philanthropy was created by Solid Snake and his team to combat these other Metal Gears, however major nations within the international community have voiced concern about Philanthropy. Thus the IAEA board has taken steps to recommend expansion of its responsibilities as follows.
The IAEA is to;
-Gather information on suspected development of new 'Metal Gears'.
-Gather evidence of their existence, and prevent their completion.