This and other designs were tested with Soviet cooperation at a tank school in western Russia.

American officials say Soviet cooperation is crucial to Mr. Bush's plan to get a resolution through the United Nations.

Without Soviet cooperation, he said, the offices may not be useable for decades.

Despite Soviet cooperation during the war, these concessions left many in the West uneasy.

Soviet cooperation, it was believed, would prove necessary to remake the face of postwar Europe.

Soviet cooperation in this affair is hugely important to us, and the prestige associated with the treaty is important for them.

Soviet cooperation is essential.

We may also manage to build institutions that offer a role for Soviet cooperation.

The American official referred to Soviet cooperation in the southern African negtiations as "very productive."

Soviet cooperation will be essential after the war to keep Iraq from rebuilding its military machine, restrain arms sales to the region and restore stability.