The Ure (Hangul: 우레; English: Thunder), often called KTSSM (Korean Tactical Surface-to-Surface Missile; Korean: 한국형 전술 지대지 유도탄; Hanja: 韓國型戰術地對地導彈; RR: Hangukhyeong Jeonsul Jidaeji Yudotan) is a short-range tactical surface-to-surface missile (SSM) developed through the Lightning Project (Korean: 번개사업; RR: Beongae Saeop) that began as a countermeasure against North Korea's conventional artillery raised in the wake of the Bombardment of Yeonpyong Island.^[2]

The Block 1 for fixed launcher platform, which was developed in 2019, was jointly developed with Hanwha Group under the leadership of Agency for Defense Development (ADD) and is currently developing an improved Block 2 version to operate on various transporter erector launcher (TEL) platforms.^[1][6]

The KTSSM (Ure) was developed with the intention of quickly neutralizing North Korean long-range artillery. Dubbed the "artillery killer," Hanwha Corporation designed the missile in partnership with the Agency for Defense Development (ADD). Four missiles can be launched almost simultaneously from a fixed launch pad and they can travel 120 km (75 mi); the launcher and missiles as a set have a combined cost of $1.9 million. They are GPS-guided to hit targets within two meters and have a shaped thermal warhead that can penetrate bunkers and hardened, dug-in targets several meters underground or 1.5 m (4.9 ft) of concrete.^[4] While it resembles the American MGM-140 ATACMS missile, the KTSSM is cheaper and more accurate with a shorter range, though still adequate to perform the counterbattery role. There are two versions of the missile: KTSSM-1 for attacking M1978/M1989 Koksan 170 mm howitzers and M1985/M1991 240 mm unguided multiple rocket launchers (MRLs); and KTSSM-2, a self-propelled system tasked with engaging KN-09 300 mm MRLs and KN-02 short-range ballistic missiles, having a Block I version employing a thermal penetrating warhead and a Block II version with a unitary high-explosive warhead.^{[7][8][9][10]}

Development lasted from 2014-2017 at a cost of USD$418 million, and it was successfully test-launched in October 2017. In March 2018, the South Korean Army announced it would create a new artillery brigade composed of KTSSM-2 and K239 Chunmoo multiple launch rocket systems with the aim of destroying North Korea’s hardened long-range artillery sites near the Korean Demilitarized Zone, to be inaugurated in October of that year. Fielding was planned for 2019, but initially postponed to 2023 because the United States had yet to approve the purchase of important components.^[8][9][10] In 2019, it was reported that the KTSSM would be deployed in 2021.^[11] In November 2020, Defense Acquisition Program Administration (DAPA) announced mass production would begin for the missile to enter service in 2022, with more than 200 units planned to be made by 2025.^[12]

• Hyunmoo
• MGM-140 ATACMS