Iraq has become a testing ground for competing notions of American power and leadership, and of when the unilateral use of force is legitimate.

This goes far beyond anything allowed by the Charter, which restricts the unilateral use of force to self-defense against "armed attack."

"We're not going to invade another country or resort to unilateral use of forces," said Mr. Walters.

It was critical of not being informed earlier, and described the unilateral use of force as "undermining the due process of verification".

But he added that the crisis "cries out for multilateral attention" rather than the unilateral use of force by the United States.

The solution is not unilateral use of force.

I will rule out unilateral use of American military forces as one of the options.

She felt a unilateral use of force would isolate America from our allies around the world and reinforce the cause of our enemies.

The Bush Doctrine is founded on the assumption of the unilateral use of military might, underpinned by a commitment to preventive warfare.

The unilateral use of military power to change state borders, to seize economic resources and to right perceived wrongs is unacceptable.