Russia : ` ` It 's part and parcel of their threats to engage in more provocations , '' says U.S. official . U.S. officials say a new North Korean nuclear test could come at any time . ` It emphasized the necessity to continue on with launching artificial satellites ... and long-range rockets , '' the agency reported . North Korea has conducted two previous nuclear tests , in 2006 and 2009 .
Russia : ` ` It 's part and parcel of their threats to engage in more provocations , '' says U.S. official . U.S. officials say a new North Korean nuclear test could come at any time . North Korea has conducted two previous nuclear tests , in 2006 and 2009 .