Top officials from the U.S., South Korea and Japan held a trilateral call on Monday following North Koreas’ fourth missile test this year and urged Pyongyang to return to dialogue.

U.S. Special Representative for the DPRK Sung Kim spoke with his Japanese and South Korean counterparts Funakoshi Takehiro and Noh Kyu-duk to discuss the latest missile tests and sanctions against North Korea.

Kim “expressed concern about the DPRK’s missile launches, which violated multiple UN Security Council resolutions and were the latest in a series of ballistic missile launches by the DPRK this