Volkswacht Bodensee - N. Korea fires ballistic missiles ahead of major US-S. Korea air drills

The launch comes as the South wraps up 12 days of amphibious naval military exercises, involving key security ally America, and ahead of the Monday start of major combined air drills that will involve more than 200 US and South Korean fighter jets.

Such exercises infuriate Pyongyang, which sees them as rehearsals for invasion and has repeatedly justified its blitz of missile launches as necessary "countermeasures" to what it deems US aggression.

South Korea's military said it had "detected two ballistic missiles fired from the Tongchon area in Kangwon between 1159 (0259 GMT) and 1218," it said, referring to a province on North Korea's east coast.

"Our military has increased monitoring and surveillance and is maintaining a full readiness posture in close coordination with the US," Seoul's Joint Chiefs of Staff said in a statement.

The missiles flew approximately 230 kilometres (143 miles) at an altitude of 24 kilometres and speeds of Mach 5, the statement said, calling the launch "a serious provocation" that violated UN sanctions.

The US military's Indo-Pacific Command also condemned the launch, saying it highlighted "the destabilising impact" of North Korea's banned weapons programmes.

With talks long-stalled, tensions on the peninsula are at their highest point in years, with North Korean leader Kim Jong Un last month declaring his country an "irreversible" nuclear power, effectively ending negotiations over his banned weapons programmes.

Officials in Washington and Seoul have been warning for months that Kim is ready to conduct another nuclear test, which would be the country's seventh -- and the first since 2017.

On Tuesday, South Korean President Yoon Suk-yeol said it appeared Pyongyang had "already completed preparations for a seventh nuclear test", he told parliament.

On Wednesday, the United States, Japan and South Korea vowed such a test would warrant an "unprecedentedly strong response".

North Korea has this month fired multiple artillery barrages into a maritime "buffer zone" that was set up in 2018 as a way of reducing tensions with the South during a period of ill-fated diplomacy.

It also announced it had staged what it called "tactical nuclear drills" that simulated showering the South with nuke-capable missiles.

And on Monday, a North Korean ship reportedly crossed the two countries' flashpoint maritime border, prompting an exchange of warning shots.

North Korean state media has also recently carried a rare series of statements from the country's military condemning the "enemy's war drills" and calling for them to stop.

- 'Provocations' -

The Friday launch is Pyongyang's effort to push back against both the "Hoguk" amphibious drills and "Vigilant Storm" air drills, said Hong Min of the Korea Institute for National Unification.

"The North knows it cannot compete with the combined US-South Korea air capabilities so instead it intends to show it has the capacity to strike their air command centre with their missiles," he told AFP.

"The North has always dreaded and been sensitive to the Vigilant Storm exercise involving a large joint fleet of fighter jets, and views it as a very aggressive posture," he added.

North Korea's latest launch is part of a dramatic increase this year in what Seoul calls "provocations", including Pyongyang conducting its longest-ever missile launch by distance, which overflew Japan and prompted rare evacuation warnings.

In response, Seoul has conducted live-fire drills, and the US redeployed a nuclear-powered aircraft carrier to the region to conduct large-scale trilateral drills also involving Tokyo.

Analysts say Pyongyang's confidence that gridlock at the United Nations will protect it from further sanctions has emboldened it to step up its weapons testing.

The Security Council has been divided on responding to Pyongyang's nuclear ambitions for months, with Russia and China on the sympathetic side and the rest of the council pushing for punishment.

Kim has made developing tactical nukes -- smaller, battlefield-ready weapons -- a priority, and Seoul recently warned Pyongyang could be preparing to conduct multiple consecutive nuclear tests as part of this drive.

H.Seidel--BTB