With or without U.S. participation, harmonization goes into effect in three weeks.

As the latter conflict escalated, the US participation became overt.

Without use of the flexible mechanisms, costs without US participation were estimated at less than 0.1%.

Defending the first military intervention of his presidency, he said US participation in the coalition...

On the downside, US participation was disappointing and may have reflected active 'campaigning' behind the scenes.

She returned to Washington the next morning, determined to oppose U.S. participation in the war.

But it has never been so clear in recent years as in the Balkans how important US participation is.

Thus, U.S. participation in the organization that Wilson had worked so hard to create was nullified.

The League of Nations was established without U.S. participation in 1920.

Some members personally visited their Congressmen to lobby against the U.S. participation in the war.