North Korea's Kim Jong-un and South Korean leader meet at border

Last updated at 11:06
North Korean leader Kim Jong Un (L) and South Korean President Moon Jae-in (R) pose for photos in front of Bukhansan Peace House for the Inter-Korean Summit on April 27, 2018 in Panmunjom, South Korea.Getty Images

The leaders of North and South Korea have met for the first time in 10 years.

North Korea's Kim Jong-un and South Korea's Moon Jae-in shook hands at the border, and then held hands as they crossed the military line between the two countries.

This is the first time a North Korean leader has set foot in the country of South Korea in 65 years.

In Pictures: North and South Korean leaders meet

That was when the Korean war ended as the countries agreed an armistice - which is when warring countries agree to stop fighting.

It was that war which split Korea into two; North and South.

The two leaders have now said they will formally agree a peace treaty by the end of the year.

North Korean leader Kim Jong Un (L) and South Korean President Moon Jae-in (R) cross back the military demarcation line to the south side after Moon crossing the border to north upon meeting for the Inter-Korean Summit April 27, 2018 in Panmunjom, South Korea.Getty Images

Find out more about North Korea in our guide: What do we know about North Korea?

A North Korean woman carries the national flag after a parade for the 'Day of the Sun' festivalEPA

The two neighbours have not held serious talks since December 2015.

This meeting is part of a summit, and comes after a recent relaxing of tensions between the countries.

Over the last few months North Korea has been making efforts to start friendlier talks with its neighbour.

North Korean leader Kim Jong Un (L) and South Korean President Moon Jae-in (R) walk after the official welcome ceremony for the Inter-Korean Summit on April 27, 2018 in Panmunjom, South KoreaGetty Images

In January 2018 a secure phone line was reopened allowing the two government's to talk to one another.

This phone line had been disabled almost two years beforehand on Kim Jong-un's orders.

Mr Kim said he was open to communicating with South Korea, and sent a team to the 2018 Winter Olympics in the South Korean city of Pyeongchang.

The North Korea and South Korea Olympic teams enter together under the Korean Unification Flag during the Parade of Athletesduring the Opening Ceremony of the PyeongChang 2018 Winter Olympic Games at PyeongChang Olympic Stadium on February 9, 2018 in Pyeongchang-gun, South Korea. (Getty Images

North and South Korea also put on a show of unity during the Olympic opening ceremony, with their athletes entering the stadium under the same flag.

The flag showed the outline of both countries joined together.

A week before his meeting with the South Korean leader, Kim Jong-un announced his country will no longer carry out tests of its nuclear weapons or missiles.

Mr Kim has also promised that a nuclear testing site in the north of his country will be shut down.

Some people think this is a sign the North Korean leader is also interested in making peace with America.

Some people have said that a potential meeting between Kim Jong-un and President Trump could take place in late May or early June.