Mike Pompeo and Kim Jong-un meet in Pyongyang

Secretary of State Mike Pompeo and Kim Jong-unmet Sunday in Pyongyang, North Korea, where they resumed denuclearization talks and discussed a second potential summit between President Trump and Kim.

What's next: Per State Department spokesperson Heather Nauert, Kim invited inspectors to the Punggye-ri nuclear test site to ensure that it had been "irreversibly dismantled." Talks had stalled between the two countries after Trump announced North Korea was not "making sufficient progress with respect to denuclearization," but Sunday's visit suggests they may be ready to move forward with negotiations.