Kim Hyun-Hee, a former North Korean spy who was ordered to bomb a South Korean airliner in 1987 by Kim Jung-Il, spoke out on Wednesday.

Hyun-Hee said she thinks Kim Jong-Un is struggling to gain control over his military after his father passed away in 2011. She said that's why there has been such harsh rhetoric coming from the communist country, The Huffington Post reported.

"Kim Jong-Un is too young and too inexperienced," she told Australia's ABC television from Seoul.

Hyun-Hee lives at an undisclosed location and is guarded by security over fear of a North Korean attack against her.

"He's struggling to gain complete control over the military and to win their loyalty,"she said. "That's why he's doing so many visits to military bases, to firm up support."

Hyun-Hee was responsible for the 1987 Baghdad-Bahrain plane bombing which left 115 dead. She placed a timed explosive device in an overhead compartment before getting off the plane at a stopover in the Gulf.

She and her partner were later caught with fake Japanese passports, whereupon they took cyanide. Her partner died, she somehow survived.

Her comments come in the wake of North Korea threatening a thermo-nuclear war. The U.S. have also annoucned that the DPRK does in fact have a nuclear device small enough to place on a missile, but probably has little chance of surviving the trip to its' destination.

Hyun-Hee also said that this harsh rhetoric has a method, which is to further bolster the countries regime and win support over its' people.

"North Korea is using its nuclear programme to keep its people in line and to push South Korea and the United States for concessions," the ex-spy said.

Hyun-Hee has also published a book, "Tears of My Soul", detailing her North Korean spy training. She has donated the proceeds to the families of the victims from the 1987 bombing.