South Korea will introduce “stronger” missiles that can travel further and strike targets with greater precision, according to the country’s new five-year defense road map released on Thursday, amid signs of an arms race on the Korean Peninsula.

The plan follows the termination of missile guidelines that have limited South Korean weapons development, announced at the U.S.-ROK summit in Washington in May this year. Originally agreed between the U.S. and South Korea in 1979 and revised over the decades, the most recent guidelines set the maximum range of South Korea’s ballistic missiles at 800 km.