A grenpeace honlapjáról:

Why we oppose war on Iraq!
Greenpeace is opposed to war. We promote non-violent solutions to conflict. We actively campaign for the elimination of all weapons of mass destruction, held by any and all countries. Here are five reasons why we are opposed to the war in Iraq:

War would have devastating human and environmental consequences.
The last Gulf war killed two hundred thousand people and left many of the survivors malnourished, diseased, and dying. Damage to ecosystems in the area remained years after the war ended. What would be the consequences of another war?

War is an ineffective way to deal with weapons of mass destruction.
There is a need for global disarmament from weapons of mass destruction that must be achieved through peaceful diplomatic negotiations.

Bush is clearly trying to gain control of Iraq's oil reserves.
As Nelson Mandela has said, an attack on Iraq would be clearly motivated by George W. Bush's desire to please the US arms and oil industries.

This war is illegal and sets a dangerous precedent.
Even Henry Kissinger argues that "the notion of justified pre-emption runs counter to modern international law, which sanctions the use of force in self-defense only against actual - not potential - threats."

It's hypocritical to single out Iraq.
Other countries such as India, Pakistan and Israel all have weapons of mass destruction.