North Korea's ambassadors to China, Russia and the UN arrived in Pyeongyang on Monday, raising questions on why these diplomats had to return so suddenly.
According to sources, the envoys were spotted at Beijing Capital International Airport on Monday, heading to the North Korean capital.
A source says their return could be linked to an annual meeting of overseas diplomatic mission chiefs.
But some watchers believe that,... as China, Russia and the UN play a key role in UN Security Council discussions on international sanctions against the regime, North Korea could be reviewing its strategies on how to deal with the sanctions... as well as set up plans on nuclear negotiations with the U.S.