The U.S. is working to “hold the DPRK accountable” for its recent missile launches, U.S. Secretary of State Antony Blinken has said, following a trilateral meeting with his Japanese and South Korean counterparts.

The talks, held in Hawaii on Saturday, came after North Korea launched nine ballistic missiles and two cruise missiles across seven separate tests in January. In a press conference after the meeting, the top diplomats of the three countries condemned the launches and announced that they had agreed to increase security cooperation, without providing further details.