If an unfriendly nation is a problem for it's people, let those people take care of their problems.

Today, we again face strong opposition by unfriendly foreign nations to a costly American missile defense program.

Perhaps those responsible hoped to kill two birds with one atomic missile, for their target was floating above the capital of an adjoining and unfriendly nation.

For too long, our dependence on oil has put us in a vulnerable position to unfriendly nations abroad.

It would also decrease the national security threat of relying on oil from unstable or unfriendly nations.

The problem, of course, is that these could be sites where you've got an unfriendly nation or an uncaring nation with whom we don't have a relationship.

"Of local operatives working for nations friendly and unfriendly."

"I take it he frowns on classified weapons' being sold to unfriendly nations."

It might once have been a small inn; what other building would stand alone so close to a border between unfriendly nations I don't know.

The plot to assassinate the Vice President is hatched by an "unfriendly nation."