Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Who is Kim Jong Un's Sister? Nike Ching STATE DEPARTMENT - As the United States assesses reports on North Korean leader Kim Jong Un's health, officials and experts say Washington will continue its sanctions and pressure campaign against Pyongyang. "We continue to call on North Korea to avoid provocations, abide by obligations under U.N. Security Council Resolutions, and return to sustained and substantive negotiations to do its part to achieve complete denuclearization'," a State Department spokesperson told VOA on Monday. .