Updated

U.S. and Japanese officials say they will position a second early-warning radar in Japan within the next year and deploy new long-range U.S. surveillance drones to help monitor disputed islands in the East China Sea, moves that may well raise tensions again with China.

The foreign and defense ministers of the two countries also put a price on what Japan will contribute to the relocation of Marines out of Okinawa to Guam and other locations in the Asia-Pacific region. Japan will pay up to $3.1 billion of the move.

The announcements came Thursday at the close of high-level meetings between U.S. Secretary of State John Kerry, U.S. Defense Secretary Chuck Hagel and their Japanese counterparts.