British officials fear that North Korea’s sudden advancement in developing nuclear weapons may be due to secret support from Iran, The Sunday Telegraph reported.
According to the report, the British Foreign Office is investigating whether "current and former nuclear states" helped Pyongyang to mount nuclear warheads on missiles.
Senior Whitehall sources told The Sunday Telegraph it is not credible that North Korean scientists alone brought about the technological advances. "North Korean scientists are people of some ability, but clearly they’re not doing it entirely in a vacuum," one minister told the newspaper.
Iran is at the top of the list of countries suspected of giving aid to North Korea, while the possibility of Russian assistance is also being investigated.
Additionally, Western officials believe that foreign countries likely supplied North Korea with either the equipment or the expertise needed in order to take additional steps on its path toward becoming a nuclear state.