N. Korea may be prepping long-range missile

YEONPYEONG, South Korea – North Korea is showing signs of preparing for another long-range missile launch after launching a series of short-range missiles, including one on Friday.

The communist country warned Friday it would act in “self-defense” if provoked by the U.N. Security Council, which is considering tough sanctions over the communist country’s nuclear test. U.S. officials told NBC News that preliminary results of atmospheric tests confirmed that underground test, at a yield of 1 to 2 kilotons.

U.S. military officials also told NBC that North Korea appears to be preparing another long-range missile test. According to the officials, spy satellites have detected “activities … movement of people and equipment” around the long-range missile launch site outside Pyongyang.