Play Live Radio
Next Up:
0:00
0:00
Available On Air Stations
Watch Live

International

U.S. Worried by Possible Korean Nuclear Test

U.S. officials closely monitor what they call worrisome new data on North Korea's nuclear activities after a large unexplained explosion was reported over North Korea Thursday. Experts seek to determine whether North Korea is preparing to test a nuclear weapon. NPR's Vicky O'Hara reports.

Copyright 2004 NPR