June 14 (UPI) -- North Korea's nuclear test site at Punggye-ri is in "standby status" and the country could conduct its sixth nuclear test at any time, according to U.S. analysts.
Writing for 38 North, a Johns Hopkins University website dedicated to North Korea issues, analysts Frank V. Pabian, Joseph S. Bermudez, Jr., and Jack Liu write that while there is no "unusual observable activity," more tests are possible "any time the North Korean leadership makes the decision to conduct them."