"The ongoing development of North Korea's nuclear and missile programs… is a clear violation of the UN Security Council resolutions. This is absolutely unacceptable. We intend to continue to cooperate closely with the United States and South Korea and call on the DPRK to refrain from provocative actions and to strictly observe UN resolutions," Suga told a press conference.
He pledged to react to the missile launches through diplomatic channels as well, and to "do everything to protect the safety of our citizens."
Pyongyang has been under pressure from the international community since its nuclear test in January, which was followed by a long-range rocket launch in February. These resulted in the UN Security Council resolving to tighten sanctions against North Korea in March.