Israel quietly upgraded a critical missile defense layer before war with Iran erupted
David’s Sling enhancements were completed shortly before the conflict escalated.
About two weeks ago, while the United States was still building up its forces in the Middle East in preparation for a possible campaign against Iran, Israel’s defense establishment announced it had completed a series of tests demonstrating significant improvements to the David’s Sling air defense system. The system is designed to intercept a range of aerial threats, including ballistic missiles, cruise missiles, fighter aircraft, and drones.
The defense establishment declined to disclose the specific nature of the upgrades, instead describing the tests in general terms as adaptations to enable the system to cope with a wider range of complex and challenging scenarios. Officials characterized the improvements as “significant,” noting that they were based on operational lessons learned since the outbreak of the October 7 war.
David’s Sling, developed and manufactured by Rafael Advanced Defense Systems, serves as the middle tier of Israel’s multi-layered missile defense architecture. It is designed to intercept threats at ranges of up to approximately 300 kilometers. The system sits between the short- and medium-range interception capabilities of Iron Dome and the long-range ballistic missile interception provided by the Arrow 2 system, developed by Israel Aerospace Industries.
Originally, David’s Sling was intended to counter heavy rockets and missiles, particularly those seen as threats from Hezbollah in Lebanon and Syria. However, during the 12-Day War, the Israeli Air Force’s air defense network used the system against missile barrages launched directly from Iran. Operational experience from that campaign, roughly eight and a half months ago, likely informed the improvements validated in the recent tests.
Enhancing David’s Sling’s ability to intercept threats originating from Iran could ease the burden on the Arrow system, which remains Israel’s primary defense against long-range ballistic missiles from the Islamic Republic and those launched by Iran-backed Houthi forces in Yemen. Expanding David’s Sling’s capabilities to intercept ballistic missiles could also help preserve interceptor stockpiles. This is particularly significant in light of recent assessments that Iran has rapidly restored and expanded its missile production capabilities following damage sustained during the 12-Day War.
At the same time, Israel’s defense industry has accelerated its own interceptor production. Defense sources told Calcalist that the production rate of Arrow 3 interceptors at Israel Aerospace Industries has tripled compared with prewar levels. Two major contracts to supply Arrow 3 systems to Germany, valued at approximately $6.5 billion, have supported the expansion of production infrastructure and will not come at the expense of supply commitments to the Israeli military.
Meanwhile, the Israeli Air Force has continued development of the next generation of Arrow interceptors. The Arrow 4 is intended to complement the Arrow 3 and will eventually replace the older Arrow 2 system. Further ahead, development is planned for the Arrow 5, which is expected to expand interception capabilities even further.
Israel’s air defense network has also been reinforced by the deployment of the American THAAD missile defense system, produced by Lockheed Martin, which was stationed in Israel as part of preparations for possible missile attacks. THAAD operates alongside the Aegis missile defense system deployed on U.S. Navy destroyers, which use SM-3 interceptors against ballistic threats.
By contrast, the Iron Beam laser system, supplied by Rafael at the end of 2025, is not designed to intercept ballistic missiles and is not expected to play a role in defending against such threats. With an estimated range of about 10 kilometers, it is intended primarily to counter drones, mortar fire, and short-range rockets.
Separately, Elbit Systems is developing a more advanced airborne laser system intended to intercept ballistic and hypersonic missiles from high altitude. The concept envisions mounting the system on a fighter jet or dedicated aircraft, enabling it to engage threats quickly and at lower cost than traditional interceptor missiles.
In the near term, however, Iron Beam could see operational use against drones launched toward Israel by Iran or its regional proxy groups, including the Houthis in Yemen.
During the previous war, approximately 550 ballistic missiles were launched at Israel. Most were intercepted before reaching their targets, but dozens penetrated the defenses, striking communities and infrastructure across the country. The attacks caused widespread damage and killed 30 people. According to the Ministry of Defense and the Israel Defense Forces, approximately 85 percent of the missiles were successfully intercepted.
