SEOUL, South Korea (AP) — The NATO military alliance is calling for international pressure to be ratcheted up against North Korea following its latest nuclear test.

NATO ambassadors said after talks in Brussels on Wednesday that “it is now imperative that all nations implement more thoroughly and transparently existing U.N. sanctions” against the North.

They urged more efforts to pressure North Korea to abandon what they called its “current threatening and destabilizing path.”

The 29-nation U.S.-led alliance expressed full solidarity with Japan and South Korea, North Korea’s neighbors. No mention was made of other retaliatory measures, such as the possible use of force.

U.S. President Donald Trump has said that “now is not the time to talk to North Korea” and that “all options remain open to defend the United States and its allies.”