Diplomats say that the question of American participation is sensitive.

The military requirement for success was a large American participation in the invasion.

He used his celebrity to advance the cause of American participation.

American participation must be necessary for the operation to succeed.

Without American participation, any intervention will carry a high risk of failure.

But what to do after ending American participation is another matter.

American participation at a high level is essential again today.

They argue the merits of American participation in the world war.

They would be followed by a multinational force in which some form of American participation might take place.

If it is, shouldn't the issue of American participation be subordinate?