NORTH KOREA has "thousands of tons" of chemical weapons ready to strike as Kim Jong-un poses the "gravest threat to international peace and security".

GETTY NORTH KOREA: Kim Jong-un is feared to be stockpiling chemical weapons to attack the South

South Korea's foreign minister, Yun Byung-se, warned today Pyongyang has "thousands of tons of chemical weapons" stockpiled across North Korea. He called on the UN to suspend the beggar kingdom from the organisation, and warned of the threat rising from Kim Jong-un. The minister called the assassination of Kim Jong-nam a “wake-up call to all of us to North Korea’s chemical weapons capability and its intent to actually use them,” "North Korea's fast-growing weapons of mass destruction and missile capabilities including chemical weapons has become gravest threat to international peace and security," he said. Byung-se added new harder sanctions "could take the form of suspension of North Korea's rights and privileges as a UN member."

Inside North Korea: The pictures Kim Jong-un doesn't want you to see Since 2008, photographer Eric Lafforgue ventured to North Korea six times. Thanks to digital memory cards, he was able to save photos that was forbidden to take inside the segregated state 1 / 62 Eric Lafforgue/Exclusivepix Medi Taking pictures in the DMZ is easy, but if you come too close to the soldiers, they stop you

Kim Jong-un’s suspected killing of his half brother Kim Jong-nam by an assassin armed with deadly VX nerve agent has reigniated fears of a biological attack. The nerve agent has previously been used by a cult who carried out terrifying chemical terror attacks on public transport in Japan. Pyongyang is estimated by South Korea to have around 25 chemical agents and six nerve gas weapons at their disposal.

“North Korea have become gravest threat to international peace and security” Yun Byung-se Military chiefs from Seoul met with Japanese and US officials in Washington to discuss the growing chemical threat from the North. Toxic nerve agent VX is a chemical weapon classified as a weapon of mass destruction by the UN, who also banned the mass production for weapons. South Korean bosses revealed ahead of the meeting it believes North Korea is operating huge production facilities for chemical and biological weapons.

GETTY KIM JONG-NAM: Kim Jong-un's brother was killed by an assassin using toxin VX

GETTY VX NERVE AGENT: Hazmat police sweep Kuala Lumpur Airport for traces of toxins

South Korea’s Ministry of National Defence said the North has a “stockpile” of chemical weapons which can be used in “any attack”. Forces revealed they believe Pyongyang is offering a “regiment-level biochemical weapons unit” – with regiments being 1000 to 2000 troops. Seoul said it would “spare no expense” in upgrading the South Korean military to face the growing weapons threat – amid fears Kim Jong-un is preparing to invade.

Real or fake? The North Korea tyrant Kim Jong-un WANTS the West to see As innocent people starve in gulags, Kim Jong-un allows tightly controlled press trips to show a version of North Korea most citizens wouldn't even recognise. Happy, prosperous, developed: check out these pictures and see 1 / 34 AFP/Getty Images A man smokes a cigarette in a bar