North Korea fired multiple short-range ballistic missiles on Wednesday toward its east coast, South Korea and Japan said, days after Pyongyang unveiled a uranium enrichment facility and vowed to beef up its nuclear arsenal.

Japan’s military says it detected North Korea test-firing at least one ballistic missile, adding to its military demonstrations as tensions with Washington and neighbors escalate

Analysts in Seoul have expressed growing concern that both political parties competing for the presidency in the U.S. may shift away from the long-standing goal of denuclearizing Pyongyang.