A Polish official says the U.S. and Poland have agreed on terms for stationing American troops and military equipment in the eastern European country.

The move is a prerequisite for deploying U.S. Patriot missiles to Poland next year and a possible future missile defense site.

Defense Ministry spokesman Robert Rochowicz said Thursday Prime Minister Donald Tusk's government must still approve it. He didn't say when that would happen or give other details.

In addition, Poland has expressed willingness to host elements of a new U.S. missile-defense system that would replace a scrapped Bush-era plan.