North Korea routinely accuses the U.S. of aerial espionage, issuing a tally of such flights at the end of every month. The U.S. military doesn't comment, although it acknowledges monitoring North Korean military activity.
The U.S. used an RC-135 plane based in Japan, U-2 and other reconnaissance aircraft to spy on "strategic targets" in the North, said the North's Korean Central News Agency, citing unidentified military officials.
Intelligence reports have said North Korea placed a long-range missile, Taepodong-2, on a pad in preparation to test-fire it. Experts say the missile can reach as far as the U.S. mainland.
North Korea accuses Washington of being hostile toward it and looking for a chance to attack it. The U.S. denies that, the AP reports.
Outgoing US President Donald Trump does not accept the outcome of the November election. Trump has also refused to attend Joe Biden's inauguration ceremony on January 20