German vice chancellor visits North Korean border on trip to South

Swimmers take part in the annual Winter Solstice Nude Swim during the Dark Mofo Festival in Hobart on Long Beach. Adam Sills/AAP/dpa

German Vice Chancellor Robert Habeck, who is on a visit to South Korea, visited the country's heavily-fortified border with North Korea on Friday, as tensions on the Korean peninsula have been on the rise.

Following his return from the border area, Habeck compared the Korean demarcation line to the former border that separated West Germany and East Germany for decades before the end of the Cold War.

"It is a very different border to the one we know from the German division," Habeck said, adding that nevertheless the visit had reminded him of Germany's past.

The trip had also impressed on him Korea's history, the Korean War, the bloody battles and the division of the country, as well as the threat posed by North Korea following Russian President Vladimir Putin's visit there, Habeck said.

The German politician's trip to the border area comes on the heels of a visit by Putin to Pyongyang two days earlier where he and North Korean leader Kim Jong Un struck an agreement on mutual assistance in the event of an attack by a third country.

South and North Korea are separated by a 4-kilometre-wide Demilitarized Zone (DMZ) secured by a US-led UN command. The DMZ still forms the de facto border between the two countries, which have remained in a state of war under international law since the Korean War from 1950 to 1953.

The heavily-fortified buffer zone, which is around 240 kilometres long, was established across the Korean peninsula at the end of the war.

Robert Habeck, Germany's Minister for Economic Affairs and Climate Protection, talks to soldiers on site during a visit to the Demilitarized Zone (DMZ) between North and South Korea. Habeck is visiting South Korea until June 21, after which he will fly to China. Sebastian Christoph Gollnow/dpa
Robert Habeck, Germany's Minister for Economic Affairs and Climate Protection, speaks to journalists during a visit to the Demilitarized Zone (DMZ) between North and South Korea. Habeck is visiting South Korea until June 21, after which he will fly to China. Sebastian Christoph Gollnow/dpa
A soldier of the United States Forces Korea stands in front of a logo of the Joint Security Area during the visit of the Demilitarized Zone (DMZ) between North and South Korea by Minister of Economic Affairs Habeck. Habeck is visiting South Korea until June 21, after which he will fly to China. Sebastian Christoph Gollnow/dpa
Robert Habeck, Germany's Minister for Economic Affairs and Climate Protection, talks to soldiers on site during a visit to the Demilitarized Zone (DMZ) between North and South Korea. Habeck is visiting South Korea until June 21, after which he will fly to China. Sebastian Christoph Gollnow/dpa