North Korea announced it had performed a test of its cruise missile system on Saturday. It was the communist country’s fourth known missile launch since November and the second in less than a week since President Donald Trump’s inauguration.

“The Missile Administration of the Democratic People’s Republic of Korea conducted a test-fire of sea-to-surface strategic cruise-guided weapons on January 25,” the country’s state-controlled news agency, KCNA, reported. “The test-fire of the weapon system is part of plans for building the national defense capabilities to raise the effectiveness of strategic control against potential enemies in conformity with the changing regional safety circumstances.”