An estimated 60,000 children face potential starvation in North Korea, where international sanctions are exacerbating the situation by slowing aid deliveries, the United Nations Children's Fund (UNICEF) said on Tuesday.

World powers have imposed growing sanctions on North Korea for its nuclear and ballistic missile programs. Last week the United States announced fresh sanctions on nine entities, 16 people and six North Korean ships it accused of helping the weapons programs.

Under United Nations Security Council resolutions, humanitarian supplies or operations are exempt from sanctions, said Omar Abdi, UNICEF deputy executive director.