A round-up of today's headlines in Washington, DC
North Korea concerns addressed
President Donald Trump will speak Monday with South Korean President Moon Jae-on amid growing tensions with North Korea.
The United Nations Security Council is holding its second meeting in a week about North Korea. The country said it detonated a hydrogen bomb underground Sunday.
The North trumpeted "perfect success" in its sixth nuclear test blast since 2006.
Defense Secretary Jim Mattis on Sunday said the U.S. will answer any threat from the North with a "massive military response."
United Nations Security Council meets about North Korea
Monday's meeting is the second in a week about the nuclear concerns. The meeting was requested by the United States, Japan, France, Britain and South Korea.
U.S. Ambassador Nikki Haley said North Korea's relentless actions show that its leader, Kim Jong Un, is "begging for war," and the time has come for the council to adopt the strongest diplomatic measures.
Diplomats from France, Britain, Italy and elsewhere reiterated demands for the regime to halt its ballistic missile and nuclear weapons programs and urged further sanctions.
The Associated Press contributed to this report.