A 2018 military agreement between North Korea and South Korea designed to prevent inadvertent clashes along their shared border may be at risk after the South accused the North of violating the deal by firing artillery into buffer zones.

The so-called Comprehensive Military Agreement (CMA) was the most substantive deal to come from the months of meetings between leader Kim Jong Un and then-South Korean President Moon Jae-in.

With those talks long stalled, however, recent drills and shows of force along the fortified border between the two Koreas have cast doubts on the future of the measures, which were meant to reduce tensions.