NORTH Korea is facing a triple whammy of threats as an assassination squad "closes in on Kim", China "prepares a land invasion" and Australia hits back at the rogue nation.

Kim Jong-un's upstart state has quickly found itself "fighting" on three fronts after pushing its luck once too often over the last few months, reports The Sun.

An elite assassination squad with a mission to take out Kim and his soldiers has reportedly arrived on the Korean peninsula to await orders to strike.

The highly-trained Navy Seals "Decapitaton Team" has teamed up with the US and South Korean navies to take part in drills close to Kim's kingdom, according to the Daily Star.

The Maritime Counter Special Operations Exercise will simulate an attack on North Korea in a move which is bound to fire up Kim, who called earlier exercises on the peninsula a "blatant act of war".

The dictator is now so terrified of being targeted for assassination he travels incognito.

Who is Kim Jong-un?

The third-generation ruler is "extremely nervous" about a clandestine plot to assassinate him and his offsiders.

It's feared the North is now planning more missile launches in response to the huge US war fleet parked on its doorstep.

The pariah state's missile movements were seen on satellite pictures by the South Korean government, according to local media reports.

The Seals unit is said to be on board a nuclear powered submarine in the US war fleet being led by the USS Ronald Reagan aircraft carrier.

Alongside the SAS, the Seals are considered the world's most elite fighting force.

They famously launched the helicopter raid on Osama bin Laden's Pakistan compound in 2011.

After being dropped into the Abbottabad complex they killed the al-Qaeda leader, removed his body and made away with thousands of documents relating to the terror group's activities.

None of the Navy Seals who took part in the daring raid were injured.

The news comes as images reveal China may be plotting a huge land invasion of its noisy neighbour.

The Communist state is building a six-lane highway through a sparsely populated area neighbouring Kim's rogue state.

Some believe the real reason for the G1112 Ji'an - Shuangliao Expressway is to allow tanks and soldiers to flood over the border quickly.

Nearly all of North Korea's nuclear facilities are believed to be located within 100 kilometres of the Chinese border.

To make things for worse for paranoid Kim, tensions between North Korea and Australia have also reached boiling point.

Kim has targeted the Aussies after they let his "enemies" conduct more military drills in their territory.

This angered Kim Jong-un who declared the nation "in range" of one of his nukes.

State news agency KCNA criticised the "dangerous" decision to support the US and South Korea.

The statement read: "Should Australia continue to follow the US in imposing military, economic and diplomatic pressure upon the DPEK, they will not be able to avoid disaster."

But Australian Defence Personnel Minister Dan Tehan revealed his country was "not scared" by the threats.

He said: "We will not be cowed by the North Koreans.

"We will continue to do everything we can to protect, help, and support our allies."

This story originally appeared in The Sun and is reprinted with permission.