you first have to know the foreign relations nightmare that is the DPRK, diplomatically they are very dodgy
North Korea has had a history of poor relations with neighboring countries. During the 1970s and 1980s, North Korea carried out abductions of citizens of Japan and South Korea. Although having since partly resolved the issue by admitting its role in the abductions, it remains a contentious issue with the two countries. In addition, the United States accuses North Korea of counterfeiting large numbers of high quality U.S. bills. However, South Korea has maintained a Sunshine policy towards North Korea since the 1990s, stressing re-unification and thus often going to great lengths to avoid antagonizing the leadership of the country.
Since the late 1980s, North Korea's nuclear program has become the most pressing issue in international affairs. After allegations from the United States about the continued existence of a military nuclear program in defiance of the 1994 Agreed Framework, North Korea admitted to the existence of uranium enrichment activities and withdrew from the Nuclear Non-proliferation Treaty on January 10, 2003. After insisting on bilateral negotiations with the United States, it agreed to six-party talks between itself, the United States, South Korea, China, Russia, and Japan in August 2003. The talks continued for two years until an agreement was reached on September 19, 2005, though it began to fall apart almost immediately.
Historically, North Korea has committed several terrorist acts, the last being the in-flight bombing of KAL 858 in 1987. The country has made several statements condemning terrorism. Most recently, on October 6, 2000, the U.S. and North Korea issued a Joint Statement in which "the two sides agreed that international terrorism poses an unacceptable threat to global security and peace, and that terrorism should be opposed in all its forms." The US and North Korea agreed to support international anti-terrorism legislation and combat international terrorism. Pyongyang continues to provide sanctuary to members of the Japanese Communist League-Red Army Faction who participated in the hijacking of a Japan Airlines flight to North Korea in 1970. Relations with Japan have also long been strained by the abduction of Japanese students during the 1970s and 1980s for intelligence purposes.