At the time, the two hostile powers were the greatest on earth.

Oh - and it is in control of a potentially hostile power, by the way.

Even if it weren't, Kostroma wouldn't become a hostile power.

Some plans were expanded to include war against a coalition of hostile powers.

America had been invaded by a civilian army loyal to a hostile power.

"Can you really think of selling transwarp to hostile powers?"

"How can I, when by your own admission they're negotiating to give advanced knowledge to a hostile power?"

Only this time the object wasn't to keep some hostile foreign power in the dark, but all of us.

Grundy's little mind was taken over by a hostile power.

We were trying mightily to keep the peace with a stubborn, hostile power.