The two have been at odds since a 1998-2000 border conflict, in which some 70,000 died.

The border conflict cost hundreds of millions of dollars.

In 1972 a small proxy border conflict was resolved with negotiations, where it was declared unification would eventually occur.

After the border conflict of 1995, the two countries began diplomatic negotiations, resulting in the 1998 peace treaty that established the exact location of the international border.

In time, small border conflicts grew between the government houses.