https://www.heritage.org/asia/report/suspend-undp-activities-north-korea-again#_ftn3
April 8, 2009
It is easy to see why. Under the previous UNDP arrangement, the government was able to circumvent the U.N.'s anti-proliferation sanctions and secure "dual-use" technology (including computers, software, satellite-receiving equipment, and spectrometers) that could be used for its nuclear and military programs. Pyongyang was able to launder funds using UNDP accounts, and UNDP staff concealed evidence of North Korean efforts to circulate counterfeit $100 bills.
With the only real check on future misuse of UNDP programs and funds a historically cavalier UNDP executive board–now unhelpfully chaired by Iran–Pyongyang likely and reasonably expects to make good use of UNDP in the future.