Invading Iraq could involve substantial casualties and possible long-term occupation responsibilities.

Even if the United States military knew where the sites of valuable weapons programs were, hitting them could involve large civilian casualties.

It probably will involve much higher casualties than we have already seen.

But the long-term effect of the attack by the contras, which involved civilian casualties, wasral difficult to determine.

Both involved high casualties, considerable cost, and eventual defeat.

Any operation to arrest him might involve high casualties and would be too risky to start immediately, the officials said.

The American military reported last week that the capital averaged 34 attacks a day, many involving multiple casualties.

A plan as big as this would surely involve casualties.

The battle plan was brilliant, involving relatively few casualties to coalition military personnel.

Serious military action, even for sensibly limited objectives, would involve ground forces and serious American casualties.