North and South Korea will officially march under one flag at the upcoming 2018 Winter Olympics, announced the South on Wednesday. The decision comes as a major diplomatic achievement for the two states, just weeks after their first diplomatic talks in two years, according to the NY Post.

In addition, the two nations will create a joint women’s ice hockey team, and train for skiing events together in North Korea.

South Korean president, Moon Jae-in, proposed the idea back in June of 2017, but it wasn’t a serious possibility until Kim spoke of dialogue with the south in his New Year’s Day speech.

The diplomatic breakthrough for the peninsula marks a milestone, as tensions have been increasing over the past several years. North Korean leader Kim Jong-un has stood strongly beside his defensive nuclear program, as the south and the United States continue to hold joint military exercises off the coast of North Korea.