Japan filed a strong protest Wednesday against Pyongyang over its test-firing of two intermediate-range ballistic missiles into the Sea of Japan earlier in the day.

The launch took place as the leaders of the U.S, South Korea and Japan gathered in The Hague for summit talks on the nuclear threat posed by North Korea.

The timing of the missile launch during a trilateral meeting between Prime Minister Shinzo Abe, President Park Geun-hye and President Barack Obama suggested it was a deliberate show of force by Pyongyang aimed squarely at their three countries.