US, Japan, South Korea coordinate response to North Korean threats

Deepening military cooperation between the DPRK and Russia, including munitions and ballistic missile transfers, is particularly egregious given Russia's status as a Permanent Member of the U.N. Security Council,

the three leaders said, using an acronym for North Korea

Daniel Kritenbrinkeast Asian and Pacific Affairs

We discussed our important economic cooperation,

Assistant Secretary of State for East Asian and Pacific Affairs Daniel Kritenbrink, who also participated in the meeting, told reporters during a phone briefing late Thursday

Jake Sullivanwhite House national security adviser

Transitions have historically been time periods when the DPRK has taken provocative actions,

Sullivan said, using the abbreviation for North Korea’s formal name, the Democratic People’s Republic of Korea

We've made progress on technology protection, on supply chain diversification, on missile warning and the sharing of data with respect to miswarning in all of those areas,

he said

We are going to treat it with the seriousness with which it deserves to be treated,

he said

Jake Sullivanwhite House national security adviser

I do not think we can count on a period of quiet with the DPRK,

said White House national security adviser Jake Sullivan, using the initials for North Korea's formal name