The U.S. has conducted a successful test of its Terminal High-Altitude Area Defense (THAAD) system, intercepting a medium-range target ballistic missile for its 15th success in 15 tries, the Missile Defense Agency (MDA) said.

Experts said Sunday’s test was almost certainly aimed at reassuring nervous Asian allies amid the growing threat from a nuclear-armed North Korea.

The THAAD test — which came just two days after the North successfully conducted its second launch of a powerful new intercontinental ballistic missile (ICBM) — destroyed the air-launched target.