WASHINGTON (AP) — Poland's foreign minister said Friday his country has reached an agreement in principle with the United States on plans to install a U.S. missile defense system in Polish territory.

Radek Sikorski said that after his meetings with officials here, he is satisfied that, as part of the eventual deal, the United States will deal with security problems that Poland has raised.

Sikorski did not outline the terms of the deal, but in a joint appearance with Secretary of State Condoleezza Rice after a working lunch, the two officials suggested that the U.S. would help with Polish air defenses, as Poland had sought.

Sikorski said that negotiators would continue to work on the details of an agreement that would allow the U.S. to install 10 interceptors as part of a long-range European missile defense system. He sought to address likely Russian concern about the U.S. air defense aid.

"The reinforced Polish air defenses are not directed against anybody," Sikorski said. "They are to enable Poland to be a stronger NATO ally with the United States, to enable Poland to take part in operations, in out-of-area operations, in joint operations."